The Impact of Leptospira hardjo-bovis Can Linger

St. Joseph, Missouri, June 3, 2011—The U.S. cattle industry has not seen significant changes in the clinical syndrome caused by Leptospira hardjo-bovis (LHB); yet, the disease continues to burden cow/calf producers with reproduction implications that can become costly and widespread within the herd.

Acute LHB infection may cause sudden temperature spikes, anorexia and lethargy. But, these symptoms can go unnoticed, and often the only indication of infection is a repeat breeder. Once the embryo is lost, LHB causes infertility and delayed breeding. This makes the disease especially economically damaging for cow/calf operators, who struggle to get cows pregnant due to the reduced fertility caused by the disease. To learn more visit