U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            ALVARADO-ESQUIVEL, C - Juarez University Of The State Of Durangoitem
                                            GARCIA-MACHADO, C - Juarez University Of The State Of Durangoitem
                                            ALVARADO-ESQUIVEL, D - Juarez University Of The State Of Durangoitem
                                            GONZALEZ-SALAZAR, A - Juarez University Of The State Of Durangoitem
                                            BRIONES-FRAIRE, C - Juarez University Of The State Of Durangoitem
                                            VITELA-CORRALES, J - Juarez University Of The State Of Durangoitem
                                            VILLENA, I - Collaboratoritem
                                            Dubey, Jitender
  Submitted to: Journal of Parasitology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 3/1/2011
                                    Publication  Date: 8/1/2011
                                    Citation: Alvarado-Esquivel, C., Garcia-Machado, C., Alvarado-Esquivel, D., Gonzalez-Salazar, A.M., Briones-Fraire, C., Vitela-Corrales, J., Villena, I., Dubey, J.P. 2011. Seroprevalence of Toxoplasma gondii infection in domestic pigs in Durango State, Mexico. Journal of Parasitology. 97:616-619.Interpretive Summary: Toxoplasma gondii is a single-celled parasite of all warm-blooded hosts worldwide. It causes mental retardation and loss of vision in children, and abortion in livestock. Cats are the main reservoir of T. gondii because they are the only hosts that can excrete the resistant stage (oocyst) of the parasite in the feces. Humans become infected by eating undercooked meat from infected animals and food and water contaminated with oocysts. In the present study, authors report prevalence of Toxoplasma in pigs destined for human consumption in Mexico. The results will be of interest to biologists, parasitologists, and public health workers.
                                Technical Abstract: Little is known concerning the prevalence of Toxoplasma gondii infection in pigs in Mexico. Antibodies to T. gondii were determined in 1,077 domestic pigs in Durango, Mexico using the modified agglutination test (MAT). Two groups (A, B) of pigs were sampled: Group A pigs (n=555) were raised in 3 geographical regions in Durango State and Group B pigs (n=522) were from Sonora State but slaughtered in Durango City. Overall, antibodies to T. gondii were found in 137 (12.7%) of 1,077 pigs, with titers of 1:25 in 30, 1:50 in 23, 1:100 in 18, 1:200 in 22, 1:400 in 12, 1:800 in 8, 1:1,600 in 2, and 1:3,200 or higher in 22. Of the pigs raised in Durango State, seroprevalence varied with age, management, and the geographic region; pigs raised in backyards in the mountainous region had a significantly higher seroprevalence (32.1%) than those raised at the valley region (13%) and the semi-desert region (14%). Seroprevalence was lower in younger (<9 mo-old) pigs (10.9%) than older (19.5%) pigs. A significantly higher seroprevalence was observed in pigs raised in Durango State (Group A, 16%) than those from Sonora State (Group B, 9.2%). Toxoplasma gondii infection was higher in mixed breed (15.7%) than in pure bred (10.4%) pigs. This is the first in depth study on the seroprevalence of T. gondii infection of pigs in Mexico, and the first report in pigs from Durango State, Mexico. Results indicate that infected pork is likely an important source of T. gondii infection in humans in Durango State.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov