2022-01-14: Highly Pathogenic Avian Influenza by David Arnold Emery January 14, 2022 Avian Influenza Avian Influenza USDA confirmed today that a wild American wigeon (dabbling duck) in Colleton County, South Carolina has tested positive for Highly Pathogenic Avian Influenza (HPAI) H5N2. Be sure you are practicing the best biosecurity possible.