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                    U.S. DEPARTMENT OF AGRICULTURE
 Animal Parasitic Diseases Laboratory: Beltsville, MD
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ARS Home Northeast Area Beltsville, Maryland (BARC) Beltsville Agricultural Research Center Animal Parasitic Diseases Laboratory People & Locations







Oliver C Kwok
                        Animal Parasitic Diseases Laboratory

                        




                        
                        Microbiologist
                        Phone: (301) 504-8984
                        
                        
                        Fax: (301) 504-9222(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)
                            **Publications**
                                                (Clicking on the reprint icon
                                                    Reprint Icon
                                                    will take you to the publication reprint.)Sarcocystis and other parasites in feces of bobcats (lynx rufus) from Mississippi
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Araujo, L., Gupta, A., Kwok, O.C., Lovallo, M. 2023. Sarcocystis and other parasites in feces of bobcats (lynx rufus) from Mississippi. Journal of Parasitology. 109(6):638-642. https://doi.org/10.1645/23-95.Sarcocystis cruzi (Hasselmann, 1923) Wenyon, 1926: redescription, molecular characterization, and deposition of life cycle stages specimens in the Smithsonian Museum
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Gupta, A., De Araujo, L., Kwok, O.C., Khan, A., Rosenthal, B.M. 2023. Sarcocystis cruzi (Hasselmann, 1923) Wenyon, 1926: redescription, molecular characterization, and deposition of life cycle stages specimens in the Smithsonian Museum. Parasitology. 150(13):1192-1206. https://doi.org/10.1017/S003118202300094X.The same genotype of Sarcocystis neurona responsible for mass mortality in marine mammals induced a clinical outbreak in raccoons (Procyon lotor) 10 years later
                                                        

- (Peer Reviewed Journal)Gupta, A., Duncan, M., Araujo, L., Kwok, O.C., Rosenthal, B.M., Khan, A., Dubey, J.P. 2023. The same genotype of Sarcocystis neurona responsible for mass mortality in marine mammals induced a clinical outbreak in raccoons (Procyon lotor) 10 years later. International Journal for Parasitology. 53(14):777-785. https://doi.org/10.1016/j.ijpara.2023.08.001.First serological and molecular detection of Toxoplasma gondii in guinea pigs (Cavia porcellus) used for human consumption in Nariño, Colombia, South America
                                                        

- (Peer Reviewed Journal)Lopez-Orozco, N., Quiroz-Bucheli, A., Kwok, O.C., Dubey, J.P., Canon-Franco, W., Sepulveda-Arias, J. 2022. First serological and molecular detection of Toxoplasma gondii in guinea pigs (Cavia porcellus) used for human consumption in Nariño, Colombia, South America. Veterinary Parasitology. 36. Article e10081. https://doi.org/10.1016/j.vprsr.2022.100801.Recent epidemiologic, clinical, subclinical and genetic diversity of Toxoplasma gondii infections in bats
                                                        

- (Peer Reviewed Journal)Yang, Y., Murata, F., Cerqueira-Cezar, C., Kwok, O.C., Su, C., Dubey, J.P. 2021. Recent epidemiologic, clinical, subclinical and genetic diversity of Toxoplasma gondii infections in bats. Microorganisms. 140:193-197. https://doi.org/10.1016/j.rvsc.2021.09.006.Congenital toxoplasmosis in humans: an update of rate of congenital infections and management
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cezar, C., Kwok, O.C., Villena, I. 2021. Congenital toxoplasmosis in humans: an update of rate of congenital infections and management. Parasitology. 1-11. https://doi.org/10.1017/S0031182021001013.Bears as reservoirs of zoonotic parasites: a 50 year retrospective review based on serological and genetic evidence
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F., Cerqueira-Cezar, C., Kwok, O.C., Su, C. 2021. Bears as reservoirs of zoonotic parasites: a 50 year retrospective review based on serological and genetic evidence. Journal of Parasitology. 107(3):519-528. https://doi.org/10.1645/21-16.Recent epidemiologic, clinical, and genetic diversity of Toxoplasma gondii infections in marsupials
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F., Cerqueira-Cezar, C., Kwok, O.C., Su, C., Grigg, M. 2021. Recent epidemiologic, clinical, and genetic diversity of Toxoplasma gondii infections in marsupials. Parasites & Vectors. 14:301. https://doi.org/10.1186/s13071-021-04793-4.Recent epidemiologic, clinical, and genetic diversity of Toxoplasma gondii infections in non-human primates
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cezar, C., Kwok, O.C., Yang, Y., Su, C. 2021. Recent epidemiologic, clinical, and genetic diversity of Toxoplasma gondii infections in non-human primates. Research in Veterinary Science. 136:631-641. https://doi.org/10.1016/j.rvsc.2021.04.017.Epidemiologic and public health signifcance of Toxoplasma gondii infections in venison: 2009-2020
                                                        

- (Literature Review)Dubey, J.P., Murata, F., Cezar, C., Kwok, O.C. 2021. Epidemiologic and public health signifcance of Toxoplasma gondii infections in venison: 2009-2020. Journal of Parasitology. 107(2):309-319. https://doi.org/10.1645/20-162.Epidemiological and public health significance of Toxoplasma gondii infection in wild rabbits and hares: 2009-2020
                                                        

- (Peer Reviewed Journal)Almeria, S., Murata, F., Cerqueira-Cezar, C., Kwok, O.C., Shipley, A., Dubey, J.P. 2021. Epidemiological and public health significance of Toxoplasma gondii infection in wild rabbits and hares: 2009-2020. Microorganisms. 9(597). https://doi.org/10.3390/microorganisms9030597.Epidemiological significance of toxoplasma gondii infections in rodents: 2009-2020
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cezar, C.K., Kwok, O.C., Su, C. 2021. Epidemiological significance of toxoplasma gondii infections in rodents: 2009-2020. Journal of Parasitology. 107(2):182-204. https://doi.org/10.1645/20-121.Recent epidemiologic and clinical Toxoplasma gondii infections in wild canids and other carnivores: The past decade
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cezar, C.K., Kwok, O.C. 2020. Recent epidemiologic and clinical Toxoplasma gondii infections in wild canids and other carnivores: The past decade. Veterinary Parasitology. 290:109337. https://doi.org/10.1016/j.vetpar.2020.109337.Recent epidemiologic and clinical importance of Toxoplasma gondii infections in marine mammals: 2009-2020
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cezar, C.K., Kwok, O.C. 2020. Recent epidemiologic and clinical importance of Toxoplasma gondii infections in marine mammals: 2009-2020. Veterinary Parasitology. 288:109296. https://doi.org/10.1016/j.vetpar.2020.109296.Recent evidence for epidemiologic significance of Toxoplasma gondii infections in turkeys, ducks, ratites, and other wild birds: 2009-2020
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F., Cerqueira-Cezar, C., Kwok, O.C., Su, C. 2021. Recent evidence for epidemiologic signifcance of Toxoplasma gondii infections in turkeys, ducks, ratites, and other wild birds: 2009-2020. Parasitology. 148(1):1-30. https://doi.org/10.1017/S0031182020001961.Public health significance of Toxoplasma gondii infections in cattle: 2009-2020
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cezar, C.K., Kwok, O.C., Yang, Y. 2020. Public health significance of Toxoplasma gondii infections in cattle: 2009-2020. Journal of Parasitology. 106(6):772-788. https://doi.org/10.1645/20-82.Toxoplasma gondii infections in dogs: 2009-2020
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerquiera-Cezar, C.K., Kwok, O.C., Yang, Y., Su, C. 2020. Toxoplasma gondii infections in dogs: 2009-2020. Veterinary Parasitology. 287:109223. https://doi.org/10.1016/j.vetpar.2020.109223.Economic and public health importance of toxoplasmosis in sheep: the last decade
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueria-Cezar, C.K., Kwok, O.C., Su, C. 2020. Economic and public health importance of toxoplasmosis in sheep: the last decade. Veterinary Parasitology. 286:109195. https://doi.org/10.1016/j.vetpar.2020.109195.Public health importance of Toxoplasma gondii infections in horses and donkeys: the last decade
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cézar, C., Kwok, O.C. 2020. Public health importance of Toxoplasma gondii infections in horses and donkeys: the last decade. Research in Veterinary Science. 132(492-499). https://doi.org/10.1016/j.rvsc.2020.07.005.Epidemiologic significance of Toxoplasma gondii infections in chickens (Gallus domesticus): the past decade
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Pena, H.F., Cerqueira-Cezar, C., Murata, F.H., Kwok, O.C., Yang, Y., Gennari, S.M., Su, C. 2020. Epidemiologic significance of Toxoplasma gondii infections in chickens (Gallus domesticus): the past decade. Parasitology. 147(12):1263-1289. https://doi.org/10.1017/S0031182020001134.All about Toxoplasma gondii infections in pigs: 2009-2020
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Cerqueira-Cezar, C., Murata, F.H., Kwok, O.C., Hill, D., Yang, Y., Su, C. 2020. All about Toxoplasma gondii infections in pigs: 2009-2020. Veterinary Parasitology. 288:109185. https://doi.org/10.1016/j.vetpar.2020.109185.Importance of toxoplasmosis in goats: the last decade
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Murata, F.H., Cerqueira-Cezar, C.K., Kwok, O.C. 2020. Importance of toxoplasmosis in goats: the last decade. Research in Veterinary Science. 132:292-307. https://doi.org/10.1016/j.rvsc.2020.06.014.Distribution of toxoplasma gondii tissue cysts in shoulder
muscles of naturally infected goats and lambs
                                                        

- (Peer Reviewed Journal)Rani, S., Cerqueira-Cezar, C., Murata, F., Kwok, O.C., Dubey, J.P., Pradhan, A. 2020. Distribution of toxoplasma gondii tissue cysts in shoulder muscles of naturally infected goats and lambs. Journal of Food Protection. 83(8):1396-1401. https://doi.org/10.4315/JFP-20-024.All about toxoplasmosis in cats: the last decade
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Cerqueira-Cezar, C.K., Murata, F.H., Kwok, O.C., Yang, Y., Su, C. 2020. All about toxoplasmosis in cats: the last decade. Preventive Veterinary Medicine. 0304-4017. https://doi.org/10.1016/j.vetpar.2020.109145.White-tailed deer (Odocoileus virginianus) are a major reservoir of a diversity of Toxoplasma gondii strains in the USA and pose a risk to consumers of venison
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Cerqueira-Cézar, C.K., Murata, A.A., Verma, S.K., Kwok, O.C., Pedersen, K., Rosenthal, B.M., Su, C. 2020. White-tailed deer (Odocoileus virginianus) are a major reservoir of a diversity of Toxoplasma gondii strains in the USA and pose a risk to consumers of venison. Parasitology. 147(7):1-19. https://doi.org/10.1017/S0031182020000451.Low prevalence of viable Toxoplasma gondii in fresh, unfrozen, American pasture-raised pork and lamb from retail meat stores in the United States
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Hill, D., Fournet, V.M., Hawkins Cooper, D.S., Cerqueira-Cezar, C.K., Murata, F.H., Verma, S.K., Kwok, O.C., Rani, S., Fredericks, J.N., Adams, B., Jones, J., Weigand, R., Ying, Y., Guo, M., Su, C., Pradhan, A.K. 2019. Low prevalence of viable Toxoplasma gondii in fresh, unfrozen, American pasture-raised pork and lamb from retail meat stores in the United States. Food Control. 109:106961. https://doi.org/10.1016/j.foodcont.2019.106961.Genotyping Toxoplasma gondii from the first national survey of feral swine revealed nearly 40% seroprevalence in the adult animals, and the presence of highly virulent parasite genotypes
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Cerqueira-Cézar, C.K., Murata, F.H., Verma, S.K., Kwok, O.C., Pedersen, K., Rosenthal, B.M., Su, C. 2019. Genotyping Toxoplasma gondii from the first national survey of feral swine revealed nearly 40% seroprevalence in the adult animals, and the presence of highly virulent parasite genotypes. Parasitology. 1-8. https://doi.org/10.1017/S0031182019001586.High seroprevalence but low rate of isolation for Toxoplasma Gondii from wild elk (cervus canadensis) in Pennsylvania
                                                        

- (Peer Reviewed Journal)Koloren, Z., Cerqueira-Cezar, C., Murata, F., Kwok, O.C., Banfield, J., Brown, J., Su, C., Dubey, J.P. 2019. High seroprevalence but low rate of isolation for Toxoplasma Gondii from wild elk (cervus canadensis) in Pennsylvania. Journal of Parasitology. 105(6):890–892. https://doi.org/10.1645/19-110.Littermate cats rescued from a shelter succumbed to acute, primary toxoplasmosis associated with TOXO DB genotype #4, generally circulating in wildlife
                                                        

- (Peer Reviewed Journal)Crouch, E.E., Mittel, L.D., Southard, T.L., Cerqueira-Cezar, C.K., Murata, F.H., Kwok, O.C., Su, C., Dubey, J.P. 2019. Littermate cats rescued from a shelter succumbed to acute, primary toxoplasmosis associated with TOXO DB genotype #4, generally circulating in wildlife. Parasitology International. 72(2019):101942. https://doi.org/10.1016/j.parint.2019.101942.Toxoplasma gondii tissue cyst formation and quantitative density of tissue cysts in shoulders of pigs 7 and 14 days after feeding infected mice tissues
                                                        

- (Peer Reviewed Journal)Rani, S., Cerqueira-Cézar, C.K., Murata, F.H., Sadler, M., Kwok, O.C., Pradhan, K., Urban Jr, J.F., Hill, D.E., Dubey, J.P. 2019. Toxoplasma gondii tissue cyst formation and quantitative density of tissue cysts in shoulders of pigs 7 and 14 days after feeding infected mice tissues. Veterinary Parasitology. 269:13-15. https://doi.org/10.1016/j.vetpar.2019.04.004.Isolation and genetic characterization of Toxoplasma gondii from tissues of wild turkeys (Meleagris gallopavo) in Pennsylvania
                                                        

- (Peer Reviewed Journal)Cerqueira-Cezar, C., Da Silva, A., Murata, F., Sadler, M., Kwok, O.C., Brown, J., Casalena, M., Blake, M., Su, C., Dubey, J.P. 2019. Isolation and genetic characterization of Toxoplasma gondii from tissues of wild turkeys (Meleagris gallopavo) in Pennsylvania. Journal of Parasitology. 105(3):391-394. https://doi.org/10.1645/18-197.The effect of urbanization on Neospora caninum seroprevalence in white-tailed deer (Odocoileus virginianus)
                                                        

- (Peer Reviewed Journal)Ballash, G.A., Jenkins, M.C., Kwok, O.C., Dubey, J.P., Shoben, A.B., Robison, T.L., Kraft, T., Shaffer, E.E., Dennis, P.M. 2019. The effect of urbanization on Neospora caninum seroprevalence in white-tailed deer (Odocoileus virginianus) . EcoHealth. 16:109. https://doi.org/10.1007/s10393-018-1390-xRole of rats (Rattus norvegicus) in the epidemiology of Toxoplasma gondii infection in Grenada, West Indies
                                                        

- (Peer Reviewed Journal)Murata, F., Cerqueira-Cezar, C., Kwok, O.C., Tiwari, K., Su, C., Sharma, R., Dubey, J.P. 2018. Role of rats (Rattus norvegicus) in the epidemiology of Toxoplasma gondii infection in Grenada, West Indies. Journal of Parasitology. 104(5):571-573. https://doi.org/10.1645/18-58.An update on Toxoplasma gondii infections in northern sea otters (Enhydra lutris kenyoni) from Washington State, USA
                                                        

- (Peer Reviewed Journal)Verma, S., Lynch, D., Knowles, S., Cezar, C., Kwok, O.C., Jiang, T., Su, C., Dubey, J.P. 2018. An update on Toxoplasma gondii infections in northern sea otters (Enhydra lutris kenyoni) from Washington State, USA. Veterinary Parasitology. 258:133-137. https://doi.org/10.1016/j.vetpar.2018.05.011Seroprevalence, isolation, and co-infection of multiple Toxoplasma gondii strains in individual bobcats (Lynx rufus) from Mississippi, USA

- (Peer Reviewed Journal)Verma, S., Sweeney, A., Lovallo, M., Calero-Bernal, R., Kwok, O.C., Su, C., Grigg, M., Dubey, J.P. 2017. Seroprevalence, isolation, and co-infection of multiple Toxoplasma gondii strains in individual bobcats (Lynx rufus) from Mississippi, USA. International Journal for Parasitology. 47:297-303.Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants
                                                        

- (Peer Reviewed Journal)Atwood, T., Duncan, C., Patyk, K., Nol, P., Rhyan, J., Mccollum, M., Mckenney, M., Ramey, A., Cezar, C., Kwok, O.C., Dubey, J.P., Hennager, S. 2017. Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants. Nature Scientific Reports. 7:13193. https://doi.org/10.1038/s41598-017-13496-9Experimental neosporosis in chickens (Gallus gallus domesticus) with oocysts and tachyzoites of two recent isolates of Neospora caninum reveals resistance to infection

- (Peer Reviewed Journal)Oliveria, S., Aizawa, J., Soares, H., Chiebo, D., De Castro, B., Hora, A., Lopes, M., Schares, G., Jenkins, M.C., Kwok, O.C., Dubey, J.P., Gennari, S., Pena, H. 2018. Experimental neosporosis in chickens (Gallus gallus domesticus) with oocysts and tachyzoites of two recent isolates of Neospora caninum reveals resistance to infection. International Journal for Parasitology. 48: 117–123.Isolation of viable Toxoplasma gondii, molecular characterization, and seroprevalence in elk (Cervus canadensis) in Pennsylvania, USA

- (Peer Reviewed Journal)Dubey, J.P., Brown, J., Verma, S., Cezar, C., Benefield, J., Kwok, O.C., Yuging, Y., Murata, F., Pradhan, A., Su, C. 2017. Isolation of viable Toxoplasma gondii, molecular characterization, and seroprevalence in elk (Cervus canadensis) in Pennsylvania, USA. Veterinary Parasitology. 243: 1-5. http://dx.doi.org/10.1016/j.vetpar.2017.05.030.Prevalence and genetic characterization of Toxoplasma gondii in free-range chickens from grocery stores and farms

- (Peer Reviewed Journal)Ying, Y., Verma, S.K., Kwok, O.C., Alibana, F., Mcleod, R., Su, C., Dubey, J.P., Pradhan, A.K. 2017. Prevalence and genetic characterization of Toxoplasma gondii in free-range chickens from grocery stores and farms. Parasitology Research. 116:1591-1595.High seroprevalence of toxoplasma gondii in Elk (Cervus canadensis) of the Central Appalachians, USA

- (Peer Reviewed Journal)Cox, J., Slabach, B., Hast, J., Kwok, O.C., Dubey, J.P. 2017. High seroprevalence of toxoplasma gondii in Elk (Cervus canadensis) of the Central Appalachians, USA. Parasitology Research. 116:1079-1083.Isolation and RFLP genotyping of toxoplasma gondii in free-range chicken(Gallus domesticus) in Grenada, West Indies, revealed widespread and dominance of clonal type III parasites

- (Peer Reviewed Journal)Chikweto, A., Sharma, R., Tiwari, K., Verma, S.K., Calero-Bernal, R., Jiang, T., Su, C., Kwok, O.C., Dubey, J.P. 2017. Isolation, tissue distribution, and molecular characterization of Toxoplasma gondii from chickens in Granada, West Indies. Journal of Parasitology. 103(1):52-55.Seroepidemiologic study on the prevalence of Toxoplasma gondii and Trichinella spp. infections in black bears (Ursus americanus) in Pennsylvania, USA

- (Peer Reviewed Journal)Dubey, J.P., Brown, J., Ternent, M., Verma, S., Hill, D.E., Cezar, C., Kwok, O.C., Calero-Bernal, R., Humphreys, J. 2016. Seroepidemiologic study on the prevalence of Toxoplasma gondii and Trichinella spp. infections in black bears (Ursus americanus) in Pennsylvania, USA. Veterinary Parasitology. 229:76-80.Toxoplasmosis in geese and detection of two new atypical Toxoplasma gondii strains from naturally infected Canada geese (Branta canadensis)

- (Peer Reviewed Journal)Verma, S.K., Calero-Bernal, R., Cerqueira-Cezar, C.K., Kwok, O.C., Dudley, M.R., Jiang, T., Su, C., Hill, D.E., Dubey, J.P. 2016. Toxoplasmosis in geese and detection of two new atypical Toxoplasma gondii strains from naturally infected Canada geese (Branta canadensis). Parasitology Research. 15(5):1767-72.Seroprevalence of Neospora caninum in feral swine (Sus scrofa) in the United States

- (Peer Reviewed Journal)Cerqueria-Cezar, C., Pedersen, K., Calero-Bernal, R., Kwok, O.C., Villena, I., Dubey, J.P. 2016. Seroprevalence of Neospora caninum in feral swine (Sus scrofa) in the United States. Veterinary Parasitology. 226:35-37.Seroprevalence and isolation of viable Toxoplasma gondii from raptors in the southeastern USA

- (Peer Reviewed Journal)Love, D., Kwok, O.C., Verma, S.K., Dubey, J.P., Bellah, J. 2016. Seroprevalence and isolation of viable Toxoplasma gondii from raptors in the southeastern USA. Journal of Wildlife Diseases. 52:653-656. doi:10.7589/2015-10-269.Isolation and genetic characterization of Toxoplasma gondii from naturally infected Canada goose (Branta canadensis) detected two new atypical strains

- (Peer Reviewed Journal)Verma, S.K., Calero-Bernal, R., Cerqueira-Cezar, C.K., Kwok, O.C., Dudley, M.R., Su, C., Hill, D.E., Dubey, J.P. 2016. Isolation and genetic characterization of Toxoplasma gondii from naturally infected Canada goose (Branta canadensis) detected two new atypical strains. Parasitology Research. 115(5):1767-72.Antibody detection and molecular characterization of toxoplasma gondii from bobcats (Lynx rufus), domestic cats (Felis catus), and wildlife from Minnesota, USA

- (Peer Reviewed Journal)Verma, S.K., Minicucci, L., Murphy, D., Carstensen, M., Humpal, C., Wolf, P., Calero-Bernal, R., Cerqueira-Cezar, C., Kwok, O.C., Su, C., Hill, D.E., Dubey, J.P. 2016. Antibody detection and molecular characterization of toxoplasma gondii from bobcats (Lynx rufus), domestic cats (Felis catus), and wildlife from Minnesota, USA. Journal of Eukaryotic Microbiology. 63:567-571.Bayesian estimation of sensitivity and specificity of the modified agglutination test and bioassay for detection of Toxoplasma gondii in free-range chickens

- (Peer Reviewed Journal)Dubey, J.P., Kwok, O.C., Gardner, I. 2015. Bayesian estimation of sensitivity and specificity of the modified agglutination test and bioassay for detection of Toxoplasma gondii in free-range chickens. Parasitology. 143:314-319.Toxoplasmosis in sentinel chickens (Gallus domesticus) in New England farms: seroconversion, distribution of tissue cysts in brain, heart, and skeletal muscle by bioassay in mice and cats

- (Peer Reviewed Journal)Dubey, J.P., Lehmann, T., Lautner, F., Kwok, O.C., Gamble, R. 2015. Toxoplasmosis in sentinel chickens (Gallus domesticus) in New England farms: seroconversion, distribution of tissue cysts in brain, heart, and skeletal muscle by bioassay in mice and cats. Veterinary Parasitology. 214:55-58.Isolation and genetic characterization of viable Toxoplasma gondii from tissues and feces of cats from the central region of China

- (Peer Reviewed Journal)Yang, Y., Ying, Y., Verma, S., Cassinelli, A., Kwok, O.C., Liang, H., Pradhan, A., Su, C., Zhu, X., Dubey, J.P. 2015. Isolation and genetic characterization of viable Toxoplasma gondii from tissues and feces of cats from the central region of China. Veterinary Parasitology. 211(3-4):283-288.Characterization of the Eimeria maxima sporozoite surface protein IMP1

- (Peer Reviewed Journal)Jenkins, M.C., Fetterer, R.H., Miska, K.B., Tuo, W., Kwok, O.C., Dubey, J.P. 2015. Characterization of the Eimeria maxima sporozoite surface protein IMP1. Veterinary Parasitology. doi: 10.1016/jvetpar2015.05.009.Low prevalence of Neospora caninum and Toxoplasma gondii antibodies in dogs in Jilin, Henan and Anhui Provinces of the People’s Republic of China
                                                        

- (Peer Reviewed Journal)Yang, Y., Zhang, Q., Kong, Y., Ying, Y., Kwok, O.C., Llang, H., Dubey, J.P. 2014. Low prevalence of Neospora caninum and Toxoplasma gondii antibodies in dogs in Jilin, Henan and Anhui Provinces of the People’s Republic of China. BioMed Central (BMC) Veterinary Research. 10:295.Isolation and genetic characterization of Toxoplasma gondii from black bears (Ursus americanus), bobcats (Felis rufus), and feral cats (Felis catus) from Pennsylvania

- (Peer Reviewed Journal)Dubey, J.P., Verma, S., Calero-Bernal, R., Cassinelli, A., Kwok, O.C., Van Why, K., Su, C., Humphreys, J. 2014. Isolation and genetic characterization of Toxoplasma gondii from black bears (Ursus americanus), bobcats (Felis rufus), and feral cats (Felis catus) from Pennsylvania. Journal of Eukaryotic Microbiology. DOI: 10.1111/jeu.12196.Seroprevalence of toxoplasma gondii in white-tailed deer and free-roaming cats across a suburban to urban gradient in northeastern Ohio

- (Peer Reviewed Journal)Ballash, G., Dubey, J.P., Kwok, O.C., Shoben, A., Terry, R., Kraft, T., Dennis, P. 2014. Seroprevalence of toxoplasma gondii in white-tailed deer and free-roaming cats across a suburban to urban gradient in northeastern Ohio. EcoHealth. doi: 10.1007/s10393-014-0975-2.Isolation and genetic characterization of Toxoplasma gondii from alpaca (Vicugna pacos) and sheep (Ovis aries) grazed on pasture in Virginia
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Cassey, S., Zajac, A., Wildeus, S., Lindsay, D., Verma, S., Oliveira, S., Kwok, O.C., Su, C. 2014. Isolation and genetic characterization of Toxoplasma gondii from alpaca (Vicugna pacos) and sheep (Ovis aries) grazed on pasture in Virginia. Tropical Animal Health and Production. 46:1503-1507.Detection and survival of Toxoplasma gondii in milk and cheese from experimentally infected goats
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Verma, S., Ferreira, L., Cassinelli, A., Yuging, Y., Kwok, O.C., Tuo, W., Chiesa, O., Jones, J. 2014. Detection and survival of Toxoplasma gondii in milk and cheese from experimentally infected goats. Journal of Food Protection. 77:1747–1753.Epidemiology of toxoplasmosis in white tailed deer (Odocoileus virginianus): occurrence, congenital transmission, correlates of infection, isolation, and genetic characterization of Toxoplasma gondii

- (Peer Reviewed Journal)Dubey, J.P., Dennis, P., Verma, S., Choudhary, S., Ferreira, L., Oliviera, S., Kwok, O.C., Butler, E., Carstensen, M., Su, C. 2014. Epidemiology of toxoplasmosis in white tailed deer (Odocoileus virginianus): occurrence, congenital transmission, correlates of infection, isolation, and genetic characterization of Toxoplasma gondii. Veterinary Parasitology. 202:27-275.Isolation of viable neospora caninum from brains of wild gray wolves (canis lupus)
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Jenkins, M.C., Ferreira, L., Choudhary, S., Verma, S., Kwok, O.C., Fetterer, R.H., Butler, E., Carstensen, M. 2014. Isolation of viable neospora caninum from brains of wild gray wolves (canis lupus). Veterinary Parasitology. 201:150-153.Use of filter papers to determine seroprevalence of Toxoplasma gondii among hunted ungulates
                                                        

- (Peer Reviewed Journal)Aston, E., Mayer, P., Bowman, D., Mohammed, H., Liotta, J., Kwok, O.C., Dubey, J.P. 2014. Use of filter papers to determine seroprevalence of Toxoplasma gondii among hunted ungulates. International Journal for Parasitology: Parasites and Wildlife. 3:15-19.Toxoplasma gondii seroprevalence in donkeys (Equus asinus) from the U.S.A. and isolation of T. gondii from cats on donkey farms

- (Peer Reviewed Journal)Dubey, J.P., Ness, S.L., Kwok, O.C., Choudhary, S., Mittel, L., Divers, T. 2014. Toxoplasma gondii seroprevalence in donkeys (Equus asinus) from the U.S.A. and isolation of T. gondii from cats on donkey farms. Veterinary Parasitology. 199:18-23.Isolation and genetic characterization of Toxoplasma gondii from mute swan (Cygnus olor) from the USA

- (Peer Reviewed Journal)Dubey, J.P., Choudhary, S., Kwok, O.C., Ferreira, L., Oliveira, S., Verma, S., Marks, D., Perdersen, K., Mickley, R., Randall, A., Arsone, D., Su, C. 2013. Isolation and genetic characterization of Toxoplasma gondii from mute swan (Cygnus olor) from the USA. Veterinary Parasitology. 195:42-46.Isolation and genetic characterization of Toxoplasma gondii in the mongoose (Herpestes auropunctatus) in Grenada, West Indies

- (Peer Reviewed Journal)Choudhary, S., Zieger, U., Sharma, R., Chikweto, A., Tiwari, K., Ferreira, L., Oliveira, S., Barkley, L., Verma, S., Kwok, O.C., Su, C., Dubey, J.P. 2013. Isolation and genetic characterization of Toxoplasma gondii in the mongoose (Herpestes auropunctatus) in Grenada, West Indies. Journal of Zoo and Wildlife Medicine. 44:127-1130.Seroprevalence of Toxoplasma gondii from free-range chickens (Gallus domesticus) from Addis Adaba, Ethiopa

- (Peer Reviewed Journal)Tilahun, G., Tiao, N., Ferreira, L.R., Choudhary, S., Oliveira, S., Verma, S.K., Kwok, O.C., Molla, B., Saville, W., Medhin, G., Kassa, T., Aleme, H., Gebreyes, W., Su, C., Dubey, J.P. 2013. Seroprevalence of Toxoplasma gondii from free-range chickens (Gallus domesticus) from Addis Adaba, Ethiopa. Journal of Parasitology. 99: 740-741.A new atypical genotype mouse virulent strain of Toxoplasma gondii isolated from the heart of a wild caught puma (Felis concolor) from Durango, Mexico
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Alvarado-Esquivel, C., Herrera-Valenzuela, V., Gayosso-Dominguez, E., Oliveira, S., Verma, S., Choudhary, S., Kwok, O.C., Su, C. 2013. A new atypical genotype mouse virulent strain of Toxoplasma gondii isolated from the heart of a wild caught puma (Felis concolor) from Durango, Mexico. Veterinary Parasitology. 197:674-677.Isolation and genetic characterization of Toxoplasma gondii from the gray wolf Canis lupus

- (Peer Reviewed Journal)Dubey, J.P., Choudhary, S., Ferreira, L., Kwok, O.C., Butler, E., Carstensen, M., Yu, L., Su, C. 2013. Isolation and genetic characterization of Toxoplasma gondii from the gray wolf Canis lupus. Veterinary Parasitology. 197:685-690.Occurrence, isolation, and genetic characterization of Toxoplasma gondii from white tailed deer (Odocoileus virginianus) in New Jersey

- (Peer Reviewed Journal)Dubey, J.P., Randall, A., Choudhary, S., Ferreira, L., Verma, S., Oliveira, S., Kwok, O.C., Su, C. 2013. Occurrence, isolation, and genetic characterization of Toxoplasma gondii from white tailed deer (Odocoileus virginianus) in New Jersey. Journal of Parasitology. 99:763-769.Congenital transmission of Neospora caninum in white tailed deer (Odocoileus virginianus)
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Jenkins, M.C., Kwok, O.C.H., Ferreira, L.R., Choudhary, S., Verma, S.K., Villena, I., Butler, E., Carstensen, M., 2013. Congenital transmission of Neospora caninum in white tailed deer (Odocoileus virginianus). Vet Parasitol. 196:519-522.Isolation and characterization of new genetic types of toxoplasma gondii and prevalence of trichinella murrelli from black bear (Ursus americanus)
                                                        

- (Peer Reviewed Journal)Dubey, J.P., Hill, D.E., Zarlenga, D.S., Choudhary, S., Ferreira, L., Oliveira, S., Verna, S., Kwok, O.C., Driscoll, C., Spiker, H., Su, C. 2013. Isolation and characterization of new genetic types of toxoplasma gondii and prevalence of trichinella murrelli from black bear (Ursus americanus). Veterinary Parasitology. 196:24-30.Genotyping Toxoplasma gondii from wildlife in Pennsylvania and identification of natural recombinants virulent to mice

- (Peer Reviewed Journal)Dubey, J.P., Why, K., Verma, S., Choudhary, S., Kwok, O.C., Khan, A., Behinke, M., Sibley, L., Ferreira, L., Weaver, M., Stewart, R., Su, C. 2014. Genotyping Toxoplasma gondii from wildlife in Pennsylvania and identification of natural recombinants virulent to mice. Veterinary Parasitology. 200(2014):74-84.Isolation of Viable Toxoplasma gondii from Tissues and Feces of Cats from Addis Ababa, Ethiopia

- (Peer Reviewed Journal)Dubey, J.P., Darrington, C., Tiao, N., Ferreira, L., Choudhary, S., Molla, B., Saville, W., Tilahun, G., Kwok, O.C., Gebreyes, W. 2013. Isolation of Viable Toxoplasma gondii from Tissues and Feces of Cats from Addis Ababa, Ethiopia. Journal of Parasitology. 99:56-58.High prevalence of Toxoplasma gondii infection in Ethiopian cats in Addis Ababa, coinfection, and a review of toxoplasmosis in humans and other animals in Ethiopia

- (Peer Reviewed Journal)Tiao, N., Darrington, C.L., Molla, B., Saville, W.A., Tilahun, G., Kwok, O.C., Gebreyes, W.A., Lappin, M.R., Jones, J.L., Dubey, J.P. 2013. High prevalence of Toxoplasma gondii infection in Ethiopian cats in Addis Ababa, coinfection, and a review of toxoplasmosis in humans and other animals in Ethiopia. Epidemiology and Infection. 141:1029-1033.Seroprevalence of Toxoplasma gondii and concurrent Bartonella spp., feline immunodeficiency virus, feline leukemia virus, and Dirofilaria immitis infections in Egyptian cats

- (Peer Reviewed Journal)Al-Kappany, Y.M., Lappin, M.R., Kwok, O.C., Abu-Elwafa, S.A., Hilali, M., Dubey, J.P. 2011. Seroprevalence of Toxoplasma gondii and concurrent Bartonella spp., feline immunodeficiency virus, feline leukemia virus, and Dirofilaria immitis infections in Egyptian cats. Journal of Parasitology. 97:256-258.Seroprevalence of Neospora caninum in free-range chickens (Gallus domesticus) from the Americas

- (Peer Reviewed Journal)Martins, J., Kwok, O.C., Dubey, J.P. 2011. Seroprevalence of Neospora caninum in free-range chickens (Gallus domesticus) from the Americas. Veterinary Parasitology. dx.doi.org/10.1016/j.vetpar.2011.05.023.Genetic characterization of Toxoplasma gondii in wildlife from North America revealed widespread and high prevalence of the fourth clonal type

- (Peer Reviewed Journal)Dubey, J.P., Velmurugan, G., Rajendran, C., Yabsley, M., Thomas, N.J., Beckman, K.B., Sinnett, D., Ruid, D., Paul, W., Hart, J., Fair, P.A., Mcfee, W.E., Shearn-Bochsler, V., Kwok, O.C., Ferreira, L., Choudhary, S., Faria, E.B., Zhou, H., Felix, T.A., Su, C. 2011. Genetic characterization of Toxoplasma gondii in wildlife from North America revealed widespread and high prevalence of the fourth clonal type. International Journal for Parasitology. 41:1139-1147.Gray wolf (Canis lupus) is a natural definitive host for Neospora caninum

- (Peer Reviewed Journal)Dubey, J.P., Jenkins, M.C., Chellaiah, R., Miska, K.B., Ferreira, L., Martins, J., Kwok, O.C., Choudhary, S. 2011. Gray wolf (Canis lupus) is a natural definitive host for Neospora caninum. Veterinary Parasitology. 181:382-387.Detection of antibodies against Sarcocystis neurona, neospora spp., and Toxoplasma gondii in horses from Costa Rica

- (Peer Reviewed Journal)Dangoudoubiyam, S., Oliveira, J.B., Viquez, C., Gomez-Garcia, A., Gonzalez, O., Romero, J.J., Kwok, O.C., Dubey, J.P., Howe, D.K. 2011. Detection of antibodies against Sarcocystis neurona, neospora spp., and Toxoplasma gondii in horses from Costa Rica. Journal of Parasitology. 97:522-524.Prevalence of antibodies to Toxoplasma gondii in dogs from northeastern Portugal

- (Peer Reviewed Journal)Lopes, A.P., Santos, H., Neto, F., Rodrigues, M., Kwok, O.C., Dubey, J.P., Carduso, L. 2011. Prevalence of antibodies to Toxoplasma gondii in dogs from northeastern Portugal. Journal of Parasitology. 97:418-420.High prevalence of toxoplasmosis in cats from Egypt: isolation of viable Toxoplasma Gondii, tissue distribution, and isolate designation

- (Peer Reviewed Journal)Al-Kappany, Y., Rajendran, C., Ferreira, L., Kwok, O.C., Abu-Elwafa, S., Hilali, M., Dubey, J.P. 2010. High prevalence of toxoplasmosis in cats from Egypt: isolation of viable Toxoplasma Gondii, tissue distribution, and isolate designation. Journal of Parasitology. 96:1115-1118.Serological and parsitological prevalence of Toxoplasma gondii in wild birds from Colorado

- (Peer Reviewed Journal)Dubey, J.P., Felix, T.A., Kwok, O.C. 2010. Serological and parsitological prevalence of Toxoplasma gondii in wild birds from Colorado. Journal of Parasitology. 96:937-938.Toxoplasmosis in sand cats (Felis margarita) and other animals in the Breeding Centre for Endangered Arabian Wildlife in the United Arab Emirates

- (Peer Reviewed Journal)Dubey, J.P., Pas, A., Chellaiah, R., Kwok, O.C., Su, C. 2010. Toxoplasmosis in sand cats (Felis margarita) and other animals in the Breeding Centre for Endangered Arabian Wildlife in the United Arab Emirates. Veterinary Parasitology. 172:195-203.A new atypical highly mouse virulent Toxoplasma gondii genotype isolated from a wild black bear in Alaska

- (Peer Reviewed Journal)Dubey, J.P., Chellaiah, R., Ferreira, L.R., Kwok, O.C., Sinnett, D., Majumdar, D., Su, C. 2010. A new atypical highly mouse virulent Toxoplasma gondii genotype isolated from a wild black bear in Alaska. Journal of Parasitology. 96:713-716.New Toxoplasma gondii genotypes isolated from free-range chickens from the Fernando de Noronha, Brazil: unexpected findings

- (Peer Reviewed Journal)Dubey, J.P., Chellaiah, R., Costa, D.G., Ferreria, L.R., Kwok, O.C., Qu, D., Su, C., Marvulo, M.F., Alves, L.C., Mota, R.A., Silva, J.C. 2010. New Toxoplasma gondii genotypes isolated from free-range chickens from the Fernando de Noronha, Brazil: unexpected findings. Journal of Parasitology. 96:709-712.Seroprevalence of Toxoplasma gondii and concurrent bartonella spp., feline immunodeficiency virus, and feline leukemia infections in cats from Grenada, West Indies

- (Peer Reviewed Journal)Dubey, J.P., Lappin, M.R., Kwok, O.C., Mofya, S., Chikweto, A., Baffa, A., Doherty, D., Shakier, J., Macpherson, C.N., Sharma, R.N. 2009. Seroprevalence of Toxoplasma gondii and concurrent Bartonella spp., feline immunodeficiency virus, and feline leukemia infections in cats from Grenada, West Indies. Journal of Parasitology. 95:1129-1133.Isolation and characterization of viable Toxoplasma gondii isolates revealed possible high frequency of mixed infection in feral cats (felis domesticus) from St. Kitts, West Indies

- (Peer Reviewed Journal)Dubey, J.P., Moura, L., Sundar, N., Velmurugan, G.V., Kwok, O.C., Kelly, P., Krecek, R.C., Majumdar, D., Su, C. 2009. Isolation and characterization of viable Toxoplasma gondii isolates revealed possible high frequency of mixed infection in feral cats (felis domesticus) from St. Kitts, West Indies. Parasitology. 136:589-594.Seroprevalence of Neospora caninum  and Toxoplasma gondii antibodies in  white tailed deer (odocoileus virginianus) from Iowa and Minnesota using four serologic tests

- (Peer Reviewed Journal)Dubey, J.P., Jenkins, M.C., Kwok, O.C., Zink, R.L., Michalski, M.L., Ulrich, V., Gill, J., Cartensen, M., Thulliez, P. 2009. Seroprevalence of Neospora caninum  and Toxoplasma gondii antibodies in white-tailed deer (odocoileus virginianus) from Iowa and Minnesota using four serologic tests. Veterinary Parasitology. 161:330-334.ISOLATION OF TOXOPLASMA GONDII   FROM ANIMALS IN DURANGO, MEXICO

- (Peer Reviewed Journal)Dubey, J.P., Velmurugan, G.V., Alvarado-Esquivel, C., Alvarado-Esquivel, D., Rodriquez-Pena, S., Martinez-Garcia, S., Gonzalez-Herrara, A.,  Ferreira, L.R., Kwok, O.C., Su, C. 2009. Isolation of Toxoplasma gondii from animals in Durango, Mexico. Journal of Parasitology. 95:319-322.SEROPREVALENCE OF TOXOPLASMA GONDII ANTIBODIES IN CATS FROM PENNSLYVANIA

- (Peer Reviewed Journal)Dubey, J.P., Bhatia, C., Ferreira, L., Thorn, A., Kwok, O.C. 2009. Seroprevalence of Toxoplasma gondii antibodies in cats from Pennsylvania. Journal of Parasitology. 95:578-580.TOXOPLASMOSIS IN CAPTIVE DOLPHINS (TURSIOPS TRUNCATUS) AND WALRUS (ODOBENUS ROSMRUS)

- (Peer Reviewed Journal)Dubey, J.P., Mergl, J., Gehring, E., Sundar, N., Velmurugan, G., Kwok, O.C., Grigg, M., Su, C., Martineau, D. 2009. Toxoplasmosis in captive dolphins (Tursiops truncatus) and walrus (Odobenus rosmarus). Journal of Parasitology. 95:82-85.SEROPREVALENCE OF NEOSPORA CANINUM AND TOXOPLASMA GONDII IN BLACK TAILED DEER (ODOCOILEUS HEMIONUS COLUMBIANUS) AND MULE DEER (ODOCOILEUS HEMIONUS HEMIONUS)

- (Peer Reviewed Journal)Dubey, J.P., Mansfield, K., Hall, B., Kwok, O.C., Thulliez, P. 2008. Seroprevalence of neospora caninum and toxoplasma gondii  in black-tailed deer (odocoileus hemionus columbianus) and mule deer (odocoileus hemionus hemionus).  Veterinary Parasitology. 156:310-313.NEOSPORA CANINUM ANTIBODIES IN WILD CARNIVORES FROM SPAIN

- (Peer Reviewed Journal)Sobrino, R., Dubey, J.P., Pabon, M., Linarez, N., Kwok, O.C., Millan, J., Arnal, M., Luco, D., Lopez-Gatius, F., Thulliez, P., Gortazar, C., Almeria, S. 2008. Neospora caninum antibodies in wild carnivores from spain. Veterinary Parasitology. 155:190-197.TOXOPLASMA GONDII AND NEOSPORA CANINUM ANTIBODIES IN DOGS FROM GRENADA, WEST INDIES

- (Peer Reviewed Journal)Dubey, J.P., Stone, D., Kwok, O.C., Sharma, R.N. 2008. Toxoplasma gondii and neospora caninum antibodies in dogs from Grenada, West Indies. Journal of Parasitology. 94:750-751.Transplacental toxoplasmosis in naturally-infected white-tailed deer: isolation and genetic characterization of Toxoplasma gondii   from   foetuses of different gestational ages

- (Peer Reviewed Journal)Dubey, J.P., Velmurugan, G.V., Ulrich, V., Gill, J., Carstebseb, N., Sundar, N., Kwok, O.C., Thulliez, P., Su, C. 2008. Transplacental toxoplasmosis in naturally-infected white-tailed deer: isolation and genetic characterization of Toxoplasma gondii   from   foetuses of different gestational ages. International Journal for Parasitology. 38:1057-1063.Toxoplasma gondii infection in lambs: high  prevalence of live parasites, and genetic characterisation of T. gondii  isolates revealed new genotypes

- (Peer Reviewed Journal)Dubey, J.P., Sundar, N., Hill, D.E., Velmurugan, G.V., Bandini, L.A., Kwok, O.C., Su, C. 2008. Toxoplasma gondii infection in lambs: high  prevalence of live parasites, and genetic characterisation of T. gondii  isolates revealed new genotypes. International Journal for Parasitology. 38:999-1006.ISOLATION OF TOXOPLASMA GONDII   FROM   BOTTLENOSE DOLPHINS      (TURSIOPS TRUNCATUS)

- (Peer Reviewed Journal)Dubey, J.P., Fair, P.A., Sundar, N., Velmurugan, G., Kwok, O.C., Mcfee, W.E., Majumdar, D., Su, C. 2008. Isolation of toxoplasma gondii from bottlenose dolphins (tursiops truncatus). Journal of Parasitology. 94:821-823.RH: DUBEY ET AL.-TOXOPLASMA GONDII FROM CATS IN PUERTO RICO MOUSE VIRULENT TOXOPLASMA GONDII ISOLATED FROM FERALCATS IN MONA ISLAND, PUERTO RICO

- (Peer Reviewed Journal)Dubey, J.P., Lopez-Torres, N.Y., Sundar, N., Velmurugan, G.V., Kwok, O.C., Hill, R., Su, C. 2007. Mouse-virulent Toxoplasma gondii from feral cats in Mona Island, Puerto Rico. Journal of Parasitology. 93:1265-1369.T. GONDII IN FREE-RANGE CHICKENS SEROPREVALENCE AND ISOLATION OF TOXOPLASMA GONDII FROM FREE-RANGE CHICKENS FROM GHANA, INDONESIA, ITALY, POLAND, AND VIETNAM

- (Peer Reviewed Journal)Dubey, J.P., Huong, L.T., Lawson B, W.L., Subekti, D.T., Tassi, P., Cabaj, W., Sundar, N., Velmurugan, G.V., Kwok, O.C., Su, C. 2008. T. gondii in free-range chickens: seroprevalence and isolation of toxoplasma gondii from free-range chickens from Ghana, Indonesia, Italy, Poland, and Vietnam. Journal of Parasitology. 94:68-71.ISOLATION AND GENETIC CHARACTERIZATION OF TOXOPLASMA GONDII FROM RACCOONS (PROCYON LOTOR), CATS (FELIS DOMESTICUS), STRIPED SKUNK (MEPHITIS MEPHITIS), BLACK BEAR (URSUS AMERICANUS), AND COUGAR (PUMA CONCOLOR) FROM CANADA

- (Peer Reviewed Journal)Dubey, J.P., Quirk, T., Pitt, J.A., Sundar, N., Velmurugan, G., Kwok, O.C., Leelair, D., Hill, R., Su, C. 2008. Isolation and genetic characterization of toxoplasma gondii from raccoons (Procyon lotor), cats (Felis domesticus), striped skunk (Mephitis mephitis), black bear (Ursus americanus), and cougar (Puma concolor) from Canada. Journal of Parasitology. 9:42-45.Neosporosis in Beagle dogs clinical signs, diagnosis, treatment, isolation and genetic characterization of Neospora caninum.

- (Peer Reviewed Journal)Dubey, J.P., Vianna M, C.R., Kwok, O.C., Hill, D.E., Miska, K.B., Tuo, W., Velmurugan, G.V., Conors, M., Jenkins, M.C. 2007. Neosporosis in Beagle dogs clinical signs, diagnosis, treatment, isolation and genetic characterization of Neospora caninum. Veterinary Parasitology. 149:158-166.Isolation and genotyping of Toxoplasma gondii from Ugandan chickens reveals frequent multiple infections

- (Peer Reviewed Journal)Lindstrom, I., Sundar, N., Lindh, J., Kironde, F., Kwok, O.C., Kabasa, J.D., Dubey, J.P., Smith, J.E. 2008. Isolation and genotyping of Toxoplasma gondii from Ugandan chickens reveals frequent multiple infections.  Parasitology. 135:39-45.CHARACTERIZATION OF TOXOPLASMA GONDII FROM RACCOONS (PROCYON LOTOR), COYOTES (CANIS LATRANS ), AND STRIPED SKUNKS (MEPHITIS MEPHITIS) IN WISCONSIN IDENTIFIED SEVERAL ATYPICAL GENOTYPES

- (Peer Reviewed Journal)Dubey, J.P., Sundar, N., Nolden, C.A., Samuel, M.D., Velmurgan, G.V., Bandini, L., Kwok, O.C., Bodenstein, B., Su, C. 2007. Characterization of Toxoplasma gondii from raccoons (Procyon lotor), coyotes (Canis latrans ), and striped skunks (Mephitis mephitis) in Wisconsin identified several atypical genotypes. Journal of Parasitology. 93:1524-1527Endemic avian toxoplasmosis on a farm in Illinois: clinical disease, diagnosis, biologic and genetic characteristics of Toxoplasma gondii isolates from chickens (Gallus domesticus), and a goose (Anser anser)

- (Peer Reviewed Journal)Dubey, J.P., Webb, D.M., Sundar, N., Velmurugan, G.V., Bandini, L.A., Kwok, O.C., Su, C. 2007. Endemic avian toxoplasmosis on a farm in Illinois: clinical disease, diagnosis, biologic and genetic characteristics of Toxoplasma gondii isolates from chickens (Gallus domesticus), and a goose (Anser anser). Veterinary Parasitology. 148:207-212.Endemic toxoplasmosis in pigs on a farm in Maryland:  Isolation and genetic characterization of toxoplasma gondii.

- (Peer Reviewed Journal)Dubey, J.P., Hill, D.E., Sundar, N., Velmurugan, G.V., Bandini, L.A., Kwok, O.C., Pierce, V., Kelly, K., Dulin, M., Su, C. 2008. Endemic toxoplasmosis in pigs on a farm in Maryland:  Isolation and genetic characterization of toxoplasma gondii. Journal of Parasitology. 94:36-41.NEOSPORA CANINUM AND TOXOPLASMA GONDII ANTIBODIES IN DOGS FROM DURANGO CITY, MEXICO

- (Peer Reviewed Journal)Dubey, J.P., Alvarado-Esquivel, C., Liesenfeld, O., Herrera-Flores, R.G., Ramirez-Sanchez, B.E., Gonzalez-Herrera, A., Martinez-Garcia, S.A., Bandini, L.A., Kwok, O.C. 2007. Neospora caninum and toxoplasma gondii antibodies in dogs from Durango City, Mexico. Journal of Parasitology. 93:1033-1035.Molecular and biological characterisation of Toxoplasma gondii isolates from free-range chickens from Guyana, South America identified several unique and common parasite genotypes

- (Peer Reviewed Journal)Dubey, J.P., Applewhaite, L., Sundar, N., Velmurugan, G.V., Bandini, A., Kwok, O.C., Hill, R., Su, C. 2007. Molecular and biological characterisation of Toxoplasma gondii isolates from free-range chickens from Guyana, South America identified several unique and common parasite genotypes. Parasitology. 134:1559-1566.Evaluation of four serological techniques to determine the seroprevalence of Neospora caninum in foxes (Vulpes vulpes) and coyotes (Canis latrans) on Prince Edward Island, Canada

- (Peer Reviewed Journal)Wapenaar, W., Barkema, H.W., Schares, G., Rouvinen-Watt, K., Zeijlemaker, L., Poorter, B., O’Handley, R.M., Kwok, O.C., Dubey, J.P. 2007. Evaluation of four serological techniques to determine the seroprevalence of Neospora caninum in foxes (Vulpes vulpes) and coyotes (Canis latrans) on Prince Edward Island, Canada. Veterinary Parasitology. 145:51-58.Prevalence of Toxoplasma gondii in dogs from Sri Lanka and genetic characterization of the parasite isolates

- (Peer Reviewed Journal)Dubey, J.P., Rajapakse, R.P., Wijesundera, R.R., Sundar, N., Kwok, O.C., Su, C. 2007. Prevalence of Toxoplasma gondii in dogs from Sri Lanka and genetic characterization of the parasite isolates. Veterinary Parasitology. 146:341-346.Genetic and biologic characterization of Toxoplasma gondii isolates of cats from China

- (Peer Reviewed Journal)Dubey, J.P., Zhu, X.Q., Sundar, N., Zhang, H., Kwok, O.C., Su, C. 2007. Genetic and biologic characterization of Toxoplasma gondii isolates of cats from China. Veterinary Parasitology. 145:352-356.DIVERSE AND ATYPICAL GENOTYPES IDENTIFIED IN TOXOPLASMA GONDII FROM DOGS IN SÃO PAULO, BRAZIL

- (Peer Reviewed Journal)Dubey, J.P., Gennari, S.M., Sundar, N., Vianna Mannola, C.B., Bandini, L.M., Yai, L.E., Kwok, O.C., Su, C. 2007. Diverse and atypical genotypes identified in Toxoplasma gondii from dogs in São Paulo, Brazil. Journal of Parasitology. 93:60-64.Comparison of serological methods for the diagnosis of Neospora caninum infection in cattle

- (Peer Reviewed Journal)Wapenaar, W., Barkema, H.W., Van Leeuwen, J.A., Mc Clure, J.T., O'Handley, R.M., Kwok, O.C., Thulliez, P., Dubey, J.P., Jenkins, M.C. 2007. Comparison of serological methods for the diagnosis of Neospora caninum infection in cattle. Veterinary Parasitology. 143:166-173.BIOLOGIC AND GENETIC COMPARISON OF TOXOPLASMA GONDII ISOLATES IN FREE-RANGE CHICKENS FROM THE NORTHERN PARÁ STATE AND THE SOUTHERN STATE RIO GRANDE DO SUL, BRAZIL REVEALED HIGHLY DIVERSE AND DISTINCT PARASITE POPULATIONS

- (Peer Reviewed Journal)Dubey, J.P., Sundar, N., Gennari, S.M., Minervino, A.H., Farias, N., Ruas, J.L., Santos, T., Cavalcante, G.T., Kwok, O.C., Su, C. 2007. Biologic and genetic comparison of Toxoplasma gondii isolates in free-range chickens from the northern pará state and the southern state Rio Grande do Sul, Brazil revealed highly diverse and distinct parasite populations. Veterinary Parasitology. 143:182-188.BIOLOGIC AND GENETIC CHARACTERISTICS OF TOXOPLASMA GONDII IN FREE-RANGE CHICKENS FROM NICARAGUA, CENTRAL AMERICA

- (Peer Reviewed Journal)Dubey, J.P., Su, C., Pineda, N., Kyvsgaard, N.C., Sundar, N., Luna, L.A., Rimbaud, E., Oliveira, J.B., Qi, Y., Kwok, O.C. 2006. Biologic and genetic characteristics of Toxoplasma gondii in free-range chickens from Nicaragua, Central America. Veterinary Parasitology. 142:47-53.PREVALENCE OF TOXOPLASMA GONDII IN RATS (RATTUS NORVEGICUS) IN GRENADA, WEST INDIES

- (Peer Reviewed Journal)Dubey, J.P., Bhaiyat, M.I., Macpherson, C.L., De Allie, C., Chikweto, A., Kwok, O.C., Sharma, R.N. 2006. Prevalence of Toxoplasma gondii in rats (Rattus norvegicus) in Grenada, West Indies. Veterinary Parasitology. 92:1107-1108.CHARACTERIZATION OF TOXOPLASMAA GONDII ISOLATES IN FREE-RANGE CHICKENS FROM CHILE, SOUTH AMERICA

- (Peer Reviewed Journal)Dubey, J.P., Patitucci, A.N., Su, C., Sundar, N., Kwok, O.C., Shen, S.K. 2006. Characterization of Toxoplasmaa gondii isolates in free-range chickens from Chile, South America. Veterinary Parasitology. 140:76-82.CHARACTERIZATION OF TOXOPLASMA GONDII ISOLATES FROM CATS FROM COLOMBIA, SOUTH AMERICA

- (Peer Reviewed Journal)Dubey, J.P., Su, C., Vecino, J.C., Sundar, N., Gomez, J.E., Lora, F., Jimenez, J., Kwok, O.C., Shen, S.K., Zhang, X., Nieto, A. 2006. Characterization of Toxoplasma gondii isolates from cats from Colombia, South America. Veterinary Parasitology. 141:42-47.BIOLOGIC AND GENETIC CHARACTERISTICS OF TOXOPLASMA GONDII ISOLATES IN FREE-RANGE CHICKENS FROM COSTA RICA, CENTRAL AMERICA

- (Peer Reviewed Journal)Dubey, J.P., Su, C., De Ikuverua, J.B., Morales, J.A., Bolanos, R.V., Sundar, N., Kwok, O.C., Shen, S.K. 2006. Biologic and genetic characteristics of toxoplasma gondii isolates in free-range chickens from costa rica, central america. Veterinary Parasitology. 139:29-36.GENETIC AND BIOLOGIC CHARACTERISTICS OF TOXOPLASMA GONDII ISOLATES IN FREE-RANGE CHICKENS FROM COLUMBIA, SOUTH AMERICA

- (Peer Reviewed Journal)Dubey, J.P., Gomez, J.E., Bedoya, A., Lora, F., Vianna, M., Hill, D.E., Kwok, O.C., Shen, S.K., Marcet, P.L., Lehmann, T. 2005. Genetic and biologic characteristics of toxoplasma gondii isolates in free-range chickens from Columbia, South America. Veterinary Parasitology. 134:67-72.PREVALENCE OF VIABLE TOXOPLASMA GONDII IN BEEF, CHICKEN, AND PORK FROM RETAIL MEAT STORES IN THE UNITED STATES AND RISK ASSESMENT TO CONSUMERS

- (Peer Reviewed Journal)Dubey, J.P., Hill, D.E., Jones, J.L., Hightower, A.W., Kirkland, E., Roberts, J.M., Marcet, P.L., Lehmann, T., Vianna, M., Miska, K.B., Sreekumar, C., Kwok, O.C., Shen, S.K., Gamble, H.R. 2005. Prevalence of viable toxoplasma gondii in beef, chicken, and pork from retail meat stores in the united states and risk assesment to consumers. Journal of Parasitology 91:1082-1093.GENETIC AND BIOLOGIC CHARACTERISTICS OF TOXOPLASMA GONDII INFECTIONS IN FREE-RANGE CHICKENS FROM AUSTRIA

- (Peer Reviewed Journal)Dubey, J.P., Edelhofer, R., Marcet, P., Vianna, M., Kwok, O.C., Lehmann, T. 2005. Genetic and biologic characteristics of Toxoplasma gondii infections in free-range chickens from Austria. Veterinary Parasitology 133:299-306.A COMPARISON OF FOUR SEROLOGIC TESTS TO DETECT ANTIBODIES TO TOXOPLASMA GONDII IN NATURALLY-EXPOSED BOTTLENOSE DOLPHINS (TURSIOPS TRUNCATUS).

- (Peer Reviewed Journal)Dubey, J.P., Fair, P.A., Bossart, G.D., Hill, D.E., Fayer, R., Sreekumar, C., Kwok, O.C., Thulliez, P. 2005. A comparison of four serologic tests to detect antibodies to toxoplasma gondii in naturally-exposed bottlenose dolphins (tursiops truncatus). Journal of Parasitology. 91:1074-1081.ISOLATION, TISSUE DISTRIBUTION, AND MOLECULAR CHARACTERIZATION OF TOXOPLASMA GONDII FROM CHICKENS FROM GRENADA, WEST INDIES.

- (Peer Reviewed Journal)Dubey, J.P., Bhalyat, M.I., Miska, K.B., Macpherson, C.N., Sharma, R.N., Sreekumar, C., Hill, D.E., Shen, S.K., Kwok, O.C., Lehmann, T. 2004. Isolation, tissue distribution, and molecular characterization of toxoplasma gondii from chickens from Grenada, West Indies. Journal of Parasitology.  91(3):557-560.BIOLOGIC, MORPHOLOGIC AND MOLECULAR CHARACTERIZATION OF NEOSPORA CANINUM ISOLATES FROM LITTERMATE DOGS

- (Abstract Only)Dubey, J.P., Sreekumar, C., Knickman, E., Miska, K.B., Vianna, M., Kwok, O.C., Hill, D.E., Jenkins, M.C., Lindsay, D.S., Greene, C.E. 2004. Biologic, morphologic and molecular characterization of neospora caninum isolates from littermate dogs (Abstract). COST 454 Annual Conference, Protozoal Reproduction Losses in Farm Ruminants. p.1.FIRST BIOLOGIC AND GENETIC CHARACTERIZATION OF TOXOPLASMA GONDII ISOLATES FROM CHICKENS FROM AFRICA (DEMOCRATIC REPUBLIC OF CONGO, MALI, BURKINA FASO, AND KENYA.

- (Peer Reviewed Journal)Dubey, J.P., Karhemere, S., Dahl, E., Sreekumar, C., Diabate, A., Dabire, K.R., Vianna, M.C., Kwok, O.C., Lehmann, T. 2004. First biologic and genetic characterization of Toxoplasma gondii isolates from chickens from Africa (Democratic Republic of Congo, Mali, Burkina Faso, and Kenya. Journal of Parasitology. 91(1):69-72.CLINICAL, BIOLOGIC, MORPHOLOGIC, AND MOLECULAR CHARACTERISATION OF NEOSPORA CANINUM INFECTIONS IN LITTERMATE DOGS

- (Peer Reviewed Journal)Dubey, J.P., Sreekumar, C., Knickman, E., Miska, K.B., Vianna, M.C., Kwok, O.C., Hill, D.E., Jenkins, M.C., Lindsay, D.S., Greene, C.E. 2004. Clinical, biologic, morphologic, and molecular characterisation of neospora caninum infections in littermate dogs. International Journal for Parasitology 34:1157-1167.TISSUE DISTRIBUTION AND MOLECULAR CHRACTERIZATION OF CHICKEN ISOLATES OF TOXOPLASMA GONDII FROM PERU.

- (Abstract Only)Dubey, J.P., Levy, M., Sreekumar, C., Kwok, O.C., Shen, S.K., Dahl, E., Thulliez, P., Lehmann, T. 2004. Tissue distribution and molecular chracterization of chicken isolates of toxoplasma gondii from Peru. American Society of Parasitologists 90: 1015-1018.TISSUE DISTRIBUTION AND MOLECULAR CHARACTEIZATON OF CHICKEN ISOLATES OF TOXOPLASMA GONDII FROM PERU

- (Peer Reviewed Journal)Dubey, J.P., Levy, M.Z., Sreekumar, C., Kwok, O.C., Shen, S.K., Dahl, E., Thulliez, P., Lehmann, T. 2004. Tissue distribution and molecular characterization of chicken isolates of Toxoplasma gondii from Peru. Journal of Parasitology. 90(5):1015-1018.HIGH PREVALENCE OF TOXOPLASMA GONDII IN A COMMERCIAL FLOCK OF CHICKENS IN ISRAEL, AND PUBLIC HEALTH IMPLICATIONS OF FREE-RANGE FARMING.

- (Peer Reviewed Journal)Dubey, J.P., Salant, H., Sreekumar, C., Dahl, E., Vianna, M.C., Shen, S.K., Kwok, O.C., Spira, D., Hamburger, J., Lehmann, T.V. 2004. High prevalence of Toxoplasma gondii in a commercial flock of chickens in Israel, and public health implications of free-range farming. Veterinary Parasitology. 121:317-322.MOLECULAR AND BIOLOGIC CHARACTERISTICS OF ISOLATES OF TOXOPLASMA GONDII FROM WILDLIFE IN THE UNITED STATES

- (Peer Reviewed Journal)Dubey, J.P., Graham, D.H., De Young, R.W., Dahl, E., Eberhard, M.L., Nace, E.K., Won, K., Bishop, H., Punkosdy, G., Sreekumar, C., Vianna, M.C., Shen, S.K., Kwok, O.C., Sumners, J.A., Demarais, S., Humphreys, J.G., Lehmann, T. 2003. Molecular and biologic characteristics of isolates of toxoplasma gondii from wildlife in the united states. Journal of Parasitology 90:67-71.TOXOPLASMA GONDII, NEOSPORA CANINUM, SARCOCYSTIS NEURONA, AND SARCOCYSTIS CANIS-LIKE INFECTIONS IN MARINE MAMMALS

- (Peer Reviewed Journal)Dubey, J.P., Zarnke, R., Thomas, N.J., Wong, S.K., Van Bonn, W., Briggs, M., Davis, J.W., Ewing, R., Mensea, M., Kwok, O.C.H., Romand S., Thulliez, P. 2004. Toxoplasma gondii, Neospora caninum, Sarcocystis neurona, and Sarcocystis canis-like infections in marine mammals. Veterinary Parasitology. 116:275-296.ISOLATION AND MOLECULAR CHARACTERIATOIN OF TOXOPLASMA GONDII FROM CHICKENS AND DUCKS FROM EGYPT

- (Peer Reviewed Journal)DUBEY, J.P., GRAHAM, D.H., DAHL, E., HILAI, M., EL-GHAYSH, A., SREEUMAR, C., KWOK, O.C., SHEN, S.K., LEHMANN, T. ISOLATION AND MOLECULAR CHARACTERIATOIN OF TOXOPLASMA GONDII FROM CHICKENS AND DUCKS FROM EGYPT. VETERINARY PARASITOLOGY 114:89-95, 2003.PREVALENCE OF TOXOPLASMA GONDII IN CHICKENS FROM A HIGHLY ENDEMIC AREA TO HUMANS IN SOUTHERN BRAZIL

- (Peer Reviewed Journal)Seipel Da Silva Azer, D., Bahia-Oliveira, L.M., Shen, S.K., Kwok, O.C., Lehman, T., Dubey, J.P. 2003. Prevalence of toxoplasma gondii in chickens from a highly endemic area to humans in southern brazil. Journal of Parasitology 89:394-396.PREVALENCE OF ANTIBODIES TO NEOSPORA CANINUM AND SARCOCYSTIS NEURONA IN SERA OF DOMESTIC CATS FROM BRAZIL

- (Peer Reviewed Journal)Dubey, J.P., Lindsay, D.S., Hill, D.E., Romand, S., Thulliez, P., Kwok, O.C., Silva, J., Oliveira-Camargo, M.C., Gennari, S.M. 2002. Prevalence of antibodies to neospora caninum and sarcocystis neurona in sera of domestic cats from brazil. Journal of Parasitology 88:1251-1252.OCCURRENCE OF NEOSPORA CANINUM ANTIBODIES IN SERA FROM DOGS OF THE CITY OF SAO PAULO, BRAZIL

- (Peer Reviewed Journal)Gennari, S.M., Yai, L.O., D'Auria, S.R., Cardoso, S.S., Kwok, O.C., Jenkins, M.C., Dubey, J.P. 2002. Occurrence of neospora caninum antibodies in sera from dogs of the city of sao paulo, brazil. Veterinary Parasitology 106:177-179.ESTABLISHMENT OF BESNOITIA DARLINGI FROM OPOSSUMS (DIDELPHIS VIRGINIANA) IN EXPERIMENTAL INTERMEDIATE AND DEFINITIVE HOSTS, PROPAGATION IN CELL CULTURE, AND DESCRIPTION OF ULTRASTRUCTURAL AND GENETIC CHARACTERISTICS

- (Peer Reviewed Journal)Dubey, J.P., Lindsay, D.S., Rosenthal, B.M., Sreekumar, C., Hill, D.E., Shen, S.K., Kwok, O.C., Rickard, L.G., Black, S.S., Rashmir-Raven, A. 2002. Establishment of besnoitia darlingi from opossums (didelphis virginiana) in experimental intermediate and definitive hosts, propagation in cell culture, and description of ultrastructural and genetic characteristics. International Journal for Parasitology 32:1053-1064.BIOLOGICAL AND GENETIC CHARACTERIZATION OF TOXOPLASMA GONDII ISOLATES FROM CHICKENS (GALLUS DOMESTICUS) FROM SAO PAULO, BRAZIL: UNEXPECTED FINDINGS

- (Peer Reviewed Journal)SARCOCYSTIS NEURONA INFECTIONS IN RACCOONS (PROCYON LOTOR): EVIDENCE FOR   NATURAL INFECTION WITH SARCOCYSTS, TRANSMISSION OF INFECTION TO OPOSSUMS   (DIDELPHIS VIRGINIANA), AND EXPERIMENTAL INDUCTION OF NEUROLOGIC DISEASE IN

- (Peer Reviewed Journal)ISOLATES OF SARCOCYSTIS FALCATULA-LIKE ORGANISMS FROM SOUTH AMERICAN       OPOSSUMS DIDELPHIS MARSUPIALIS AND DIDELPHIS ALBIVENTRIA FROM SAO PAULO,   BRAZIL

- (Peer Reviewed Journal)FIRST ISOLATION OF NEOSPORA CANINUM FROM THE FECES OF A NATURALLY-         INFECTED DOG

- (Peer Reviewed Journal)THE GAMMA INTERFERON KNOCK OUT MOUSE MODEL FOR SARCOCYSTIS NEURONA: COM-   PARISON OF INFECTIVITY OF SPOROCYSTS AND MEROZOITES, AND ROUTES OF         INOCULATION

- (Peer Reviewed Journal)DICLAZURIL THERAPY OF GAMMA INTERFERON KNOCKOUT MICE FED SARCOCYSTIS       NEURONA SPOROCYSTS

- (Peer Reviewed Journal)CHARACTERISTICS OF A RECENT ISOLATE OF SARCOCYSTIS NEURONA (SN7) FROM A    HORSE IN OREGON

- (Peer Reviewed Journal)FIRST ISOLATION OF SARCOCYSTIS NEURONA FROM THE SOUTH AMERICAN OPOSSUM,    DIDELPHIS ALBIVENTRIS, FROM BRAZIL

- (Peer Reviewed Journal)PREVELENCE OF SARCOCYSTIS NEURONA SPOROCYSTS IN OPOSSUMS (DIDELPHIS        VIRGINIANA) FROM RURAL MISSISSIPPI

- (Peer Reviewed Journal)SEROLOGIC SURVEY FOR TOXOPLASMA GONDII IN LYNX FROM INTERIOR ALASKA

- (Peer Reviewed Journal)PREVALENCE OF ANTIBODIES TO TOXOPLASMA GONDII IN OSTRICHES (STRUTHIO       CAMELUS)

- (Peer Reviewed Journal)SEROLOGIC SURVEY OF NEOSPORA CANINUM INFECTION IN A CLOSED DAIRY CATTLE    HERD IN MARYLAND: RISK OF SEROLOGIC REACTIVITY BY PRODUCTION GROUPS

- (Peer Reviewed Journal)FATAL TOXOPLASMOSIS IN FREE-RANGING ENDANGERED 'ALALA (CORVUS HAWAIIENSIS) FROM HAWAIIENSIS) FROM HAWAII

- (Peer Reviewed Journal)SEROLOGIC PREVALENCE OF TOXOPLAMSA GONDII IN HORSES SLAUGHTERED FOR FOOD   IN NORTH AMERICA

- (Peer Reviewed Journal)SEROLOGIC SURVEY FOR TOXOPLASMA GONDII IN CARIBOU, MOOSE, BISON,           DALL SHEEP, WOLF, AND BLACK BEAR FROM ALASKA

- (Peer Reviewed Journal)PREVALENCE OF ANTIBODIES TO NEOSPORA CANINUM IN HORSES IN NORTH AMERICA

- (Peer Reviewed Journal)INFECTION AND IMMUNITY WITH THE RH STRAIN OF TOXOPLAMSA GONDII IN RATS

- (Peer Reviewed Journal)TOXOPLASMA GONDII ANTIBODIES IN NATURALLY EXPOSED WILD COYOTES, RED FOXES, AND GRAY FOXES AND SEROLOGIC DIAGNOSIS OF TOXOPLASMOSIS IN RED FOXES FED T.GONDII OOCYSTS AND TISSUE CYSTS

- (Peer Reviewed Journal)PREVALENCE OF NEOSPORA CANINUM AND TOXOPLASMA GONDII ANTIBODIES IN SERA    FROM CAMELS FROM EGYPT

- (Peer Reviewed Journal)CANINE NEOSPOROSIS: CLINICAL SIGNS, DIAGNOSIS, TREATMENT AND ISOLATION     OF NEOSPORA CANINUM IN MICE AND CELL CULTURE

- (Peer Reviewed Journal)PROTECTIVE IMMUNITY TO TOXOPLASMOSIS IN PIGS FED IRRADIATED TOXOPLASMA     GONDII OOCYSTS

- (Peer Reviewed Journal)SEROPREVALENCE OF NEOSPORA CANINUM AND TOXOPLASMA GONDII ANTIBODIES IN     WATER BUFFALOES (BUBALUS BUBALIS) FROM EGYPT

- (Peer Reviewed Journal)LOW SEROPRVALENCE OF TOXOPLASMA GONDII IN 1,264 FERAL PIGS FROM A REMOTE   OSSABAW ISLAND

- (Peer Reviewed Journal)ANTIBODY RESPONSES OF COWS DURING AN OUTBREAK OF NEOSPOROSIS EVALUATED BY  INDIRECT FLUORESCENT ANTIBODY TESTS AND ENZYME LINKED IMMUNOSORBENT ASSAYS

- (Peer Reviewed Journal)OOCYST-INDUCED MURINE TOXOPLASMOSIS: LIFE CYCLE, PATHOGENICITY AND STAGE   CONVERSION IN MICE FED TOXOPLASMA GONDII OOCYSTS

- (Peer Reviewed Journal)TOXOPLASMOSIS IN RATS (RATTUS NORVEGICUS): CONGENITAL TRANSMISSION TO      FIRST AND SECOND GENERATION PUPS AND ISOLATION OF TOXOPLASMA GONDII FROM   SERONEGATIVE RATS

- (Peer Reviewed Journal)ANTIBODY RESPONSES MEASURED BY VARIOUS SEROLOGIC TESTS IN PIGS ORALLY      INOCULATED WITH LOW NUMBERS OF TOXOPLASMA GONDII OOCYSTS

- (Peer Reviewed Journal)SEROLOGIC SURVEY FOR TOXOPLASMA GONDII IN GRIZZLY BEARS (URSU ARCTOS) FROM ALASKA, 1973 TO 1987

- (Peer Reviewed Journal)KILLING OF TOXOPLASMA GONDII OOCYSTS BY IRRADIATION

- (Peer Reviewed Journal)INFECTIVITY OF LOW NUMBERS OF TOXOPLASMA GONDII OOCYSTS TO PIGS

- (Peer Reviewed Journal)HUMAN INDOLEAMINE 2,3-DIOXYGENASE INHIBITS TOXOPLASMA GONDII GROWTH        IN FIBROBLAST CELLS

- (Peer Reviewed Journal)


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