Infection of the foetus with BVD virus: different phases

Axel Mauroy

Infection with BVD virus leads to different disease outcomes according to the phase of bovine gestation. Infection during the first month of gestation may result in embryonic mortality, whereas infection during the second to fourth month may lead to the generation of persistently infected, immunotolerant calves. Infection later in gestation may lead to abortion and to congenital abnormalities.