A commercial broiler flock in Leake County, Mississippi, has been struck by highly pathogenic avian influenza.

There were 90,000 chickens in the flock, according to information on the United States Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) website.

With this case, Mississippi has now had two confirmed cases of HPAI in commercial poultry during the 2022-23 outbreak, although this is the first case to be confirmed in 2023. The other case involved a commercial broiler breeder flock in Lawrence County, affecting 34,400 birds. There were 34,400 birds in that flock.

According to APHIS, Mississippi has also had 188 confirmed cases of HPAI in wild birds, with the majority of those involving black vultures.


So far in 2023, the following states have had HPAI confirmed in commercial flocks: Pennsylvania, Virginia, Iowa, Tennessee, California and Kansas. However, this is only the second case of HPAI to strike a commercial broiler operation in 2023. The first one involved a flock of 267,800 chickens in Weakley County, Tennessee, with that case being confirmed on January 20.

To learn more about HPAI cases in commercial poultry flocks in the United States and Canada, see an interactive map on WATTPoultry.com. 

Read our ongoing coverage of the global avian influenza outbreak.