Abstract:

Infection of a naïve sow herd with Mycoplasma hyopneumoniae

Robert Desrosiers, DVM, DABVP; Jacques Miclette, DVM; André Broes, DVM, PhD

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A 2500-sow herd previously free of, and unvaccinated for, Mycoplasma hyopneumoniae (MHP) became infected. Both MHP and influenza A H1N1pdm09 virus were identified in sows showing clinical signs. Coughing lasting 2 to 4 days was observed in approximately 10% of sows and 26 sows died over the course of the outbreak. There was no apparent impact on performance indicators. Polymerase chain reaction and serological results showed that MHP progression within the herd was fast and that infection may have occurred within a few weeks. An elimination program was quickly implemented so that sale of negative animals could resume.

Keywords: Mycoplasma hyopneumoniae, epidemiology, elimination

Cite as: Derosiers R, Miclette J, Broes A. Infection of a naïve sow herd with Mycoplasma hyopneumoniae. J Swine Health Prod 2022;30(3):160-164.

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