Officials with the Iowa Department of Agriculture and Land Stewardship said Monday afternoon they were responding to four probable cases of highly pathogenic avian influenza (HPAI) in Sac and Sioux counties. With the new announcements, Iowa now has 56 cases of the disease in the state. The Department has quarantined the premises and once the presence of the disease is confirmed, all birds on the property will be humanely euthanized to prevent the spread of the disease.

Two of sites in Sac County are turkey farms that have experienced increased mortality. An estimate on the number of birds at the site is still pending. Initial testing showed it positive for H5 avian influenza. Additional confirmatory testing is pending from the APHIS National Veterinary Services Laboratories (NVSL) in Ames.

The two sites in Sioux County have backyard duck flocks with a total of around 62 birds that was found during monitoring activities by the Department around a previous case. Initial testing showed it positive for H5 avian influenza. Additional confirmatory testing is pending from the APHIS National Veterinary Services Laboratories (NVSL) in Ames.

As the Department receives final confirmations of the disease updated information will be posted to the Iowa Department of Agriculture and Land Stewardship’s website at www.iowaagriculture.gov/avianinfluenza.asp.