Minnesota logs rising H5N1 cases among poultry as migratory waterfowl spread the virus

Minnesota reports three new H5N1 outbreaks in commercial poultry, affecting over 118,000 birds, amid increased seasonal activity as migratory waterfowl move south. The virus poses higher risks to farmworkers, hunters, and backyard owners, though federal officials confirm the public health risk remains low.

Minnesota has recorded three further H5N1 detections in commercial poultry, taking roughly 118,000 birds into the autumn outbreak tally and signalling a seasonal rise as migratory waterfowl move south. The infections matter less for supermarket shelves than for farmworkers, backyard flock owners and hunters, who face the highest exposure as wild birds spread the virus along flyways.

The Minnesota Board of Animal Health said the latest cases affected a 55,701-bird meat flock in Big Stone County, confirmed on September 15, and two operations confirmed on September 10: a 44,352-bird turkey flock in Becker County and an 18,000-bird breeding flock in Otter Tail County. The state’s previous case had been reported on September 1 after a quieter summer, with officials noting that Minnesota had seen 11 affected operations so far in 2026, versus 31 in each of the previous two years.

Nationally, the picture looks seasonal rather than exceptional. The University of Minnesota’s Centre for Infectious Disease Research and Policy, summarising USDA postings, said 16 flocks were positive over a recent 30-day period, most in commercial birds. Because federal rules require whole-flock depopulation once H5N1 is confirmed, the numbers reflect containment measures rather than disease deaths alone.

The CDC says the public risk remains low, but urges people with bird contact to use gloves, eye protection and rapid reporting if birds die unexpectedly. Properly cooked poultry remains safe to eat.