The Colorado Department of Public Health and Environment and Centers for Disease Control and Prevention confirmed the fourth human infection tied to dairy cows suffering from HPAI.

The affected individual is a worker on a dairy farm where the H5N1 virus has been identified in cows.

Colorado became the latest state to find dairy cows with highly pathogenic avian influenza (HPAI).

The virus was likely passed from direct exposure to dairy cattle presumed to be infected with the HPAI strain.

The Indiana State Board of Animal Health reported the first positive case of highly pathogenic avian influenza (HPAI) in a commercial flock in Indiana since May 2023.

The most recent HPAI outbreak in Merced County, Calif., affected 709,000 birds.

Last week, Sonoma County officials declared a local emergency, including quarantining and euthanizing approximately 250,000 birds.

Nearly 83,000 total turkeys were affected — 30,100 turkey breeder replacement hens, 19,200 turkey breeder hens and 33,400 commercial meat turkeys, according to data from the USDA.

 Alabama became the latest state to deal with highly pathogenic avian influenza.

Already in the month of October, there have been 618,801 birds affected by the virus — 260 times more birds than in the summer months combined.