Bovine herpes mammillitis in two New York dairy herds.
Bovine herpes mammillitis was diagnosed in 2 New York dairy herds. Lesions ranged from vesiculation and ulceration of large (up to 10 cm wide) areas of udder and teat skin to single small (2-3 cm wide) plaques of edema. Some lesions resembled "umbilicated pocks" characteristic of cowpox virus infections. Recently freshened heifers were the most severely affected; older cows and heifers with less turgid udders had milder lesions. In 2 cows, incurable mastitis developed. In other cows, the lesions healed by centripetal growth of epidermis into the lesions. Diagnosis was made by isolation of bovid herpesvirus 2 from lesions in both herds and by serum-neutralization testing. Virus isolated from a cow in 1 herd was injected into 9 members of the same herd and may have been responsible for the absence of lesions on these animals; all other members of the herd were affected.
D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis* / Q000276:immunology; D003937:Diagnosis, Differential; D004196:Disease Outbreaks / Q000662:veterinary*; D005260:Female; D006566:Herpesviridae Infections / Q000175:diagnosis / Q000276:immunology / Q000662:veterinary*; D001911:Herpesvirus 2, Bovine / Q000276:immunology / Q000302:isolation & purification; D008321:Mammary Glands, Animal / Q000382:microbiology; D009500:Neutralization Tests; D009518:New York
D000914:Antibodies, Viral