[Identification of an introduced bovine herpesvirus type 1 strain in a closed dairy herd by experimental virus reactivation followed by DNA restriction enzyme analysis].

Abstract excerpt

In a closed dairy herd in the province of Utrecht in 1995, nine replacement heifers were erroneously intramuscularly vaccinated with Tracherine, a live virus IBR vaccine. More than 18 months later, serology of the herd revealed that a large part of the herd had developed an antibody response towards BHV1 (62 of 87 animals). To investigate whether Tracherine had recirculated on the farm, four BHV1 antibody...

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