Persistence of passively acquired antibodies to hemagglutinating encephalomyelitis virus in swine.
The persistence of passively acquired antibodies to hemagglutinating encephalomyelitis virus (HEV) was determined in 4 pigs in each of the litters of 10 sows. At time of delivery by the sows, the colostrum and serum samples (from the 10 sows) had hemagglutination-inhibiting antibodies to HEV. All of the pigs also had hemagglutination-inhibiting antibodies to HEV at 2 days of age. The level of circulating antibodies to HEV decreased at a nonlinear rate and persisted for about 4 to 18 (mean 10.5) weeks in the circulation of pigs. All 40 pigs were seronegative at 20 weeks of age.
D000818:Animals; D000833:Animals, Suckling / Q000276:immunology; D000914:Antibodies, Viral / Q000032:analysis*; D003126:Colostrum / Q000276:immunology*; D003332:Coronaviridae / Q000276:immunology*; D005260:Female; D007112:Immunity, Maternally-Acquired; D008297:Male; D013552:Swine / Q000276:immunology*; D013997:Time Factors
D000914:Antibodies, Viral