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Title:   Author  item
                                            VENTURINI, M - LA PLATA, ARGENTINAitem
                                            VENTURINI, L - LA PLATA, ARGENTINAitem
                                            BACIGALUPE, D - LA PLATA, ARGENTINAitem
                                            MACHUCA, M - LA PLATA, ARGENTINAitem
                                            ECHAIDE, I - SANTA FE, ARGENTINAitem
                                            BASSO, W - LA PLATA, ARGENTINAitem
                                            UNZAGA, J - LA PLATA, ARGENTINAitem
                                            DI LORENZO, C - LA PLATA, ARGENTINAitem
                                            GUGLIELMONE, A - LA PLATA, ARGENTINAitem
                                            Dubey, Jitender
  Submitted to: International Journal for Parasitology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 7/22/1999
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary: Neospora caninum is a single-celled parasite.  It causes abortion in livestock and paralysis and death in companion animals.  Neosporosis is a major cause of abortion in dairy cattle in the United States but little is known of its prevalence in central and South America.  Scientists at the Beltsville Agricultural Research Center and the Veterinary School, La  Plata, Argentina report high prevalence of N. caninum infection in cattle in Argentina.  They found N. caninum antibodies in 64.5% of cows that aborted.  These results will be of interest to veterinarians and parasitologists.
                                Technical Abstract: Antibodies to Neospora caninum were measured in bovine foetuses, dairy cows and beef cows in Argentina using the indirect fluorescent antibody test (IFAT) and the N. caninum agglutination test (NAT).  Serum antibodies (IFAT titre ò1:80) were found in 20 of 82 (24.4%) dairy cow foetuses and 1 of 22 (4.5%) beef cow foetuses.  Microscopic lesions suggestive of neosporosis  were seen in brains of 7 of 8 foetuses with IFAT titres of ò1:80. Antibodies (IFAT) were found in 122 of 189 (64.5%) dairy cows that aborted. Serum antibody titres (IFAT) of 189 dairy cows that aborted were : <1:25 (67 cows), 1:25 (4 cows), 1:50 (16 cows), 1:200 (7 cows), 1:>800 (95 cows). Of the 87 sera with IFAT titres of <1:50, 56 were had no antibodies in 1:40 dilution and 31 had titres of 1:40 in the NAT.  Thus, at least 56 dairy cows sera were seranegative both in the NAT and the IFAT.  These results suggest that transplacental transmission of N. caninum in dairy cows in  Argentina is frequent.


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