The Michigan Department of Agriculture and Rural Development (MDARD) recently confirmed the presence of highly pathogenic avian influenza (HPAI) in a Clinton County dairy herd. The diagnosis, sparking further concern as the state counts its 30th dairy herd infection, was originally made by the Michigan State University Veterinary Diagnostic Laboratory and has been dispatched to the U.S. Department of Agriculture's National Veterinary Services Laboratories for confirmatory testing, according to the Michigan Department of Agriculture and Rural Development.
In response to the threat, biosecurity measures must quickly ramp up across Michigan's dairy operations. MDARD Director Tim Boring issued a Determination of Extraordinary Emergency HPAI Risk Reduction and Response Order (HRRRO) on May 1. This order stipulates enhanced biosecurity protocols, such as a temporary ban on the exhibition of lactating dairy cattle and those in the last two months of pregnancy, remaining in effect until Michigan goes 60 consecutive days without a new HPAI case in dairy cattle, as reported by the Michigan Department of Agriculture and Rural Development.
To further safeguard against the virus, farms are advised to delay the integration of new or returning animals with unknown health statuses and isolate any that come onto the premises. Regular health monitoring and immediate veterinary contact in case of animal health concerns are essential. The provided checklist by MDARD emphasizes the importance of using dedicated equipment for sick animals, disinfecting clothing and tools, and ensuring strict on-farm visitor restrictions.
