Avian Influenza

Avian influenza, also known as "bird flu," is a disease primarily affecting birds caused by influenza viruses. Highly pathogenic avian influenza like H5N1 causes serious illness in birds that can spread rapidly, resulting in high death rates in different bird species and the ability to infect humans.


Use this link to see the current situation report for avian influenza and the resources below for more information.


Recent Updates

  • In addition to birds and poultry, highly pathogenic avian influenza (H5N1) has been detected in some mammals across Wisconsin, including fisher, striped skunks, bobcats, red foxes, and a North American river otter.
  • As of May 25th, a 120-bird backyard flock and 36 wild birds have been detected with avian influenza in Minnesota.
  • March 29th: Chile reported a human H5N1 avian influenza case. Per the last update, the virus is nearly identical to H5N1 in wild birds in Chile and is of the same clade affecting birds and poultry elsewhere. CDC says the overall risk to human health to H5N1 outbreaks in wild birds and poultry remains low.
  • March 8th: The Wisconsin Department of Agriculture, Trade, and Consumer Protection (DATCP) reminds poultry owners of the ongoing threat of avian influenza and recommends using the strongest biosecurity measures. 
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