Avian Flu Outbreak Affects Over 1.6 Million More Birds in Lancaster County

Got story updates? Submit your updates here. ›

The outbreak of avian flu in Lancaster County, Pennsylvania has affected an additional 1.6 million birds, according to the U.S. Department of Agriculture. The largest impact was at a commercial table egg layer facility with over 1.4 million birds affected. Several other broiler chicken and turkey meat production facilities also reported new cases, adding to the millions of birds already impacted in the county this year.

Why it matters

The avian flu outbreak in Lancaster County has been one of the largest in the United States, accounting for around 80% of all birds affected nationwide. While the risk to human health remains low, the scale of the outbreak has major implications for the local poultry industry and food supply.

The details

The USDA reported new avian flu cases at four more production facilities in Lancaster County. The largest was a commercial table egg layer with 1,451,700 birds affected. Additionally, a broiler chicken facility had 178,900 birds affected, and two turkey meat producers had 14,000 and 15,000 birds affected respectively.

• In 2026, there have been 7,165,000 birds affected in Lancaster County, plus an additional 120,000 reported since July 2, 2025.
• The largest single case was from a commercial table egg layer that reported more than 2.64 million birds affected earlier this week.