Clinical Signs of Bovine Herpesvirus-1 Infection in Cattle

BoHV-1 infection causes upper respiratory tract disease or reproductive disorders in cattle.

Clinical signs depend on:

  • age of the animal
  • virus dose
  • route of infection
  • secondary infections with other pathogens.

Infectious Bovine Rhinotracheitis (IBR)

  • Fever (as high as 42°C)
  • Depression
  • Loss of appetite
  • Hyperaemia of the mucosae
  • Mucosal lesions
  • Nasal discharge - Initially serous and later muco-serous to muco-purulent
  • Conjunctivitis
  • Drop in milk production
  • Infertility
  • Abortion
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Clinical signs after an experimental IBR infection - purulent nasal discharge and hyperaemia of the muzzle