Viral antibodies in bovine fetuses in Argentina.
In order to establish the prevalence of viral infections of the bovine fetus in Argentina, a serological survey for antibodies against viral agents currently affecting cattle in this country was conducted. Antibodies against foot-and-mouth disease virus (FMDV), bovine herpesvirus-1 (BHV-1), bovine leukaemia virus (BLV), bovine rotavirus (BRV), bovine coronavirus (BCV), bovine viral diarrhoea virus (BVDV) and parainfluenza-3 (PI-3) were investigated in a total of 315 fetal serum samples. Conventional techniques were used: indirect immunofluorescence (FMDV, BHV-1, BVDV and BCV), radial immunodiffusion (BLV), ELISA (BRV) and haemagglutination inhibition (PI-3). Antibodies against BHV-1, BVDV and PI-3 were detected in samples from fetuses in the second and third trimester of gestation, with a prevalence of 1.21 per cent (two of 165), 2.03 per cent (four of 197) and 5.08 per cent (nine of 177), respectively. Either antibodies or non-antibody factors able to bind to BRV and BCV antigens were detected with a prevalence of 2.44 per cent (five of 205) and 4.54 per cent (five of 110), respectively. In addition, 14.68 per cent of non-specific inhibitors of PI-3 mediated haemagglutination were found. No seropositives against FMDV and BLV were detected.
Pinto
G B
GB
Instituto de Virologia, Centro de Investigaciones en Cienciãs Veterinarias, INTA-Castelar, Morón, Buenos Aires, Argentina.
Hawkes
P
P
Zábal
O
O
Ulloa
E
E
Lager
I A
IA
Weber
E L
EL
Schudel
A A
AA
D000818:Animals; D000914:Antibodies, Viral / Q000302:isolation & purification*; D000956:Antigens, Viral / Q000276:immunology; D005537:Aphthovirus / Q000276:immunology; D001118:Argentina / Q000453:epidemiology; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D017938:Coronavirus, Bovine / Q000276:immunology; D005260:Female; D005315:Fetal Diseases / Q000453:epidemiology / Q000662:veterinary*; D005333:Fetus / Q000276:immunology*; D007242:Herpesvirus 1, Bovine / Q000276:immunology; D001909:Leukemia Virus, Bovine / Q000276:immunology; D008297:Male; D015995:Prevalence; D012401:Rotavirus / Q000276:immunology; D014777:Virus Diseases / Q000453:epidemiology / Q000662:veterinary*
D000914:Antibodies, Viral; D000956:Antigens, Viral