![]() Infection by BHV-1 is transmitted by direct contact with upper respiratory, conjunctival, or genital tract mucous membranes. 49 Only one serotype of BHV-1 is recognized. BHV-1 is fairly resistant to environmental influences and can survive for 5 to 13 days in warmer environments, but because the virion is enveloped, it is susceptible to most disinfectants. Because of viral latency and reactivation, cattle that recover from BHV-1 infec tions may serve as a source for future infection of unexposed cattle. 48 Vaccination with most modified live virus vaccines has the potential to produce latent infections. 48 Latent BHV-1 can become reactivated under certain circumstances such as stress or after corticosteroid treatment. In addition to causing a range of clinical diseases, it also can establish latent infections localized in trigeminal and sacral ganglia. KELLING, in Current Therapy in Large Animal Theriogenology (Second Edition), 2007 Important Biologic Properties of the VirusīHV-1 is a member of the family Herpesviridae, subfamily Alphaherpesvirinae.
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