PHILADELPHIA (KYW Newsradio) — Nearly two weeks after it was first detected on a calf in South Texas, the New World screwworm infestation has spread to more than a dozen animals, including a dog in New Mexico. Officials now fear the devastating pest is moving to other parts of the country and Pennsylvania is among the states taking preventive measures.
The New World screwworm is a parasitic fly whose larvae hatch and bury themselves into an open wound, causing massive tissue damage. It's highly fatal if left untreated.
“New World screwworm is unlike the flies and maggots we commonly encounter,” said State Veterinarian Dr. Alex Hamberg in a statement. “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.”
Pennsylvania has no confirmed cases of New World screwworm, but Pennsylvania Agriculture Secretary Russell Redding issued a quarantine order last week limiting animal movements.
“Taking proactive steps now to strengthen biosecurity and limit unnecessary animal movements from affected areas will help protect our farms and communities,” said Redding.
All warm blooded animals are at risk. That includes cattle, horses, goats, dogs and cats and on occasion, birds. According to the Department of Agriculture, people can be infected in rare cases.
A Brandywine Valley SPCA spokesperson there said it is following all recommendations and requirements around the screwworm with regards to movement of animals.
Meanwhile, a spokesperson for the Philadelphia Zoo said its animals are being closely monitored for any signs of disease and are receiving preventative medications against parasites.
