SN Titer Response Comparisons Among Fourteen Diagnostic Laboratories for Antibodies Protecting Against IBR, BVD and BRSV Virus Following the Administration of Modified Live Vaccine to Weaning Aged Calves
DOI:
https://doi.org/10.21423/aabppro19975857Keywords:
BRSV vaccination, IBR, BVD, lab variation, virus strain, lab technique, cell culture lineAbstract
Eleven yearling calves were vaccinated with BRSV
Vac® 41. Serum samples collected 35 days after vaccination were sent to 14 different diagnostic laboratories around the United States for assay of IBR, BVD and BRSV antibodies. A great deal of lab to lab variation was encountered. This variation was due in part to the virus strain used, lab technique and cell culture line utilized.