Avian influenza, also known as the bird flu, is caused by influenza viruses that spread between birds. According to the Indiana Department of Natural Resources, bird flu is common in wild birds, especially waterfowl, shorebirds and raptors.

An egg farm in southern Indiana has tested positive for bird flu. Rose Acre Farms, one of the largest egg producers in the country, announced on its Facebook that its Cort Acre Egg Farm in Seymour recently tested positive for highly pathogenic avian influenza (HPAI),