A Field Study of Calves Persistently Infected with the Bovine Viral Diarrhea Virus, Type I and II, in a Pennsylvania Dairy Herd
DOI:
https://doi.org/10.21423/aabppro19956179Keywords:
bovine viral diarrhea, clinical manifestation, respiratory disease, morbidity, mortality, atypicalAbstract
An outbreak of bovine viral diarrhea (BVD) virus. infection with severe clinical manifestations occurred in seven herds of cattle primarily in Northwest PA during the spring of 1994. The acute deaths and respiratory disease with high morbidity and mortality occurring in these herds were atypical of known BVD infections which usually occur as mucosal disease or abortions.