Lack of Fetal Protection against Bovine Viral Diarrhea Virus in a Vaccinated Heifer.

ABSTRACT: The aim of the report was to present the circulation of BVDV (bovine viral diarrhea virus) in the cattle population and determine the cause of the failure of vaccination failure leading to the birth of the PI (persistently infected) calf. The case study was carried out at the BVDV-free animal breeding center and cattle farm, where the vaccination program against BVDV was implemented in 2012, and each newly introduced animal was serologically and virologically tested for BVDV. In this case, a blood sample was taken from a 9-month-old breeding bull. Positive RT-PCR and negative ELISA serology results were obtained. The tests were repeated at 2-week intervals, and the results confirmed the presence of the virus and the absence of specific antibodies, i.e., persistent infection. Additionally,

SUBMITTER: Klimowicz-Bodys MD 

PROVIDER: S-EPMC8879756 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature