Submitted to: American Veterinary Medical Association Abstract
Publication Type: Abstract Only
Publication Acceptance Date: July 9, 1995
Publication Date: N/A
Technical Abstract: Leptospirosis, caused by infection with one of the serovars of Leptospira interrogans, is an important cause of bovine abortions, stillbirths, and birth of weak calves. The serovars most commonly associated with bovine leptospirosis in the United States are hardjo, pomona, and grippotyphosa. The clinical signs of leptospirosis depend on the infecting serovar and range from severe systemic illness to mild disease, in which the only clinical signs are abortion or infertility. Diagnosis of leptospirosis remains challenging and often involves a combination of serologic and microbiologic techniques. Leptospiral vaccines are generally effective in control of bovine leptospirosis, except serovar hardjo infections.