Be aware, but don’t panic, about the New World Screwworm

Illinois veterinarians are urging pet owners to stay informed—but not alarmed—about New World screwworm. The Illinois State Veterinary Medical Association says the parasite remains rare in the U.S., despite recent national attention. Screwworm larvae can infest wounds in pets, livestock, wildlife, and rarely humans, feeding on living tissue. Warning signs include wounds that won’t heal, unusual odors, visible maggots, persistent licking, or signs of pain.

“Awareness and prevention are the most important messages for pet owners right now,” said Dr. Kate Brucker, president of the Illinois State Veterinary Medical Association. “While New World screwworm has received increased attention nationally, it remains uncommon in the United States. Pet owners should not be alarmed, but they should be informed and take routine steps to protect their animals.”

“If you see something concerning, don’t try to treat it yourself,” Brucker said. “Contact your veterinarian immediately. Veterinarians are trained to identify potential cases and are required to report suspected infestations so appropriate animal health officials can respond quickly and protect other animals.”

ISVMA President Dr. Kate Brucker says owners should contact a veterinarian immediately and avoid treating suspected cases themselves. Routine wound checks, flea and tick prevention, and regular wellness visits remain the best protection for Illinois animals.

“The good news is that basic preventive veterinary care, regular wound monitoring, and prompt attention to any health concerns go a long way toward keeping pets safe,” she said. “Illinois pet owners already do many of these things every day, and that’s why we want to reassure them that simple, common-sense precautions are highly effective.”