Respiratory disease in horses.
D000818:Animals; D006566:Herpesviridae Infections / Q000662:veterinary; D004861:Herpesvirus 1, Equid; D006734:Horse Diseases; D006736:Horses; D009976:Orthomyxoviridae Infections / Q000662:veterinary; D012141:Respiratory Tract Infections / Q000662:veterinary*; D014611:Vaccination / Q000662:veterinary