Multiple Pathogens

Tuesday, October 31, 2017

(NY) Two cows from a 2400 head dairy herd were sampled because of a several week history of diarrhea without fevers. One of the cows was inappetent. Both cows were detected as heavy shedders for Mycobacterium paratuberculosis with the Johne’s Fecal PCR, and both also had Coronavirus detected by PCR and Salmonella detected by fecal culture. Clinical Johne’s disease is expected to cause immunosuppression, and in this case it may be contributing to the environmental contamination or transmission of multiple pathogens in the herd.