On Feb. 23, 2022, the U.S. Department of Agricultureﾒs Animal and Plant Health Inspection Service confirmed the presence of highly pathogenic avian influenza in a commercial poultry flock in New Castle County, Delaware.

Samples from the flock were tested at the University of Delawareﾒs Allen Laboratory in Newark, part of the National Animal Health Laboratory Network, and confirmed at the APHIS National Veterinary Services Laboratories (NVSL) in Ames, Iowa.