By Blake Jackson
The Pennsylvania Department of Agriculture has introduced a quarantine order restricting certain animal movement and is encouraging livestock owners and pet owners to strengthen biosecurity measures following concerns over the spread of New World Screwworm (NWS).
The action comes after confirmed cases of the destructive pest were reported in Texas and New Mexico.
“Pennsylvania has no confirmed cases of New World Screwworm, but this destructive pest poses a serious threat to our livestock industry, companion animals, wildlife, and agricultural economy,” Sec. Redding said.
“Taking proactive steps now to strengthen biosecurity and limit unnecessary animal movements from affected areas will help protect our farms and communities.”
The U.S. Department of Agriculture confirmed the first U.S. case in Texas on June 3, 2026, followed by additional detections in several Texas counties and one case in New Mexico.
NWS larvae feed on the living tissue of warm-blooded animals, causing severe injuries that can become fatal if untreated.
“New World Screwworm is unlike the flies and maggots we commonly encounter. These larvae feed on living tissue, causing severe wounds that can quickly become life-threatening if left untreated,” State Veterinarian Dr. Alex Hamberg said.
“Producers, veterinarians, and pet owners should regularly inspect animals for wounds that fail to heal or show signs of maggot infestation. If producers suspect NWS, they should seek veterinary care immediately,” added Hamberg.
Pennsylvania’s quarantine order, effective June 9, 2026, requires enhanced health certifications, veterinary inspections, and other preventive measures for susceptible animals entering the state from affected regions. Officials stress that movement controls, rapid detection, and immediate reporting are critical to preventing the pest from spreading.
Animal owners are encouraged to monitor livestock and pets for unusual wounds, maggots, head shaking, foul odors, or signs of irritation.
Suspected infestations should be reported immediately to a veterinarian and the Pennsylvania Department of Agriculture to help protect the state’s livestock, pets, and wildlife at (717) 772-2852.
Photo Credit: gettyimages-digitalvision
Categories: Pennsylvania, Livestock, Beef Cattle, Dairy Cattle