| studies on epidemiology and pathogenicity of porcine circovirus. | antibodies to porcine circovirus (pcv) which is the smallest animal virus known so far were found in 77-95 per cent of sera from slaughter pigs gathered in berlin and two districts of northern germany. about 60 per cent of these positive sera had relatively high titres similar to those in experimentally infected pigs 3-6 weeks after infection. this indicates that the animals might have become infected during the fattening period. sera from 2-3 year old pigs from a laboratory animal breeding inst ... | 1986 | 3778212 |