Confronting a bird flu outbreak in nature presents unique challenges, as infected animals leave a landscape contaminated, Pa.'s Game Commission veterinarian says.

Officials said the positive samples were found in a 50,000-bird layer chicken flock on a commercial poultry farm in Lehigh County.

Rose Acre Farms, the nation's second largest egg producer, said yesterday that tests have confirmed avian flu at its facility in Seymour, Indiana, which could further stretch the supply of eggs as commercial farms in several states continue to battle the spread of the H5N1 virus.

The Pennsylvania Department of Agriculture today confirmed the first positive case of Highly Pathogenic Avian Influenza (HPAI) in domestic poultry in Pennsylvania in 2025, in a 50,000-bird layer chicken flock on a commercial poultry farm in Lehigh County. ​

Bird flu pops up every year in the same way that flu season does for humans. Each time there's a different strain as mutations mix in and around wild and domestic animals. Animals, of course, get sick just like humans do. The issue that farmers say they're dealing with is that unlike the common flu humans contract -- there's no vaccine or medicine.

A commercial poultry farm in Lehigh County has Pennsylvania’s first confirmed 2025 case of bird flu in domestic poultry, the state Department of Agriculture said, noting the case affected a

The Pennsylvania Department of Agriculture on Monday confirmed the first case of avian flu in domestic poultry in 2025. The positive case was found in a chicken flock on a commercial farm in Lehigh County. This is the first case of highly pathogenic avian influenza in commercial poultry in Pennsylvania since February 2024.

State and federal agencies are at the farm “carrying out a comprehensive response plan” to prevent the virus from spreading.

Grocery store chain Wegmans has recalled frozen chicken nuggets in multiple states over concerns that there may be bone fragments in the packages.

Bird flu appears to be widespread in Massachusetts, state health and environmental officials said Wednesday.

A resurgence of the avian bird flu recently killed an estimated 5,000 snow geese in Northampton County in eastern Pennsylvania.