Heads Up: New World Screwworm (NWS) in Companion Animals aka Pets

Beege Welborn

Lots to know here, and this is what I got in an email from the AVMA:

As new cases of New World screwworm (NWS) continue to be reported in Texas and one in New Mexico, the American Veterinary Medical Association (AVMA) is urging pet owners to protect their animals from this potentially deadly flesh-eating parasite.

Here is what every pet owner should know right now:

• Dogs and cats are at risk. NWS is a parasitic fly whose larvae infest open wounds of warm-blooded animals, including household pets. Animals that are newly born, have open wounds, or have recently undergone surgery or medical procedures are especially vulnerable.
• Know the warning signs. Pet owners should check their animals regularly for draining or enlarging wounds, maggots or egg masses, signs of discomfort, or lesions in body openings such as the nose, ears, genitalia, or umbilical area. If you notice any of these signs, contact your veterinarian immediately. Don’t try to remove the larvae from the wound yourself.
• NWS is treatable, and several treatments are available. The FDA has authorized several treatments for NWS in dogs and cats. Treatment is time-sensitive, so don’t delay contacting your veterinarian if you suspect an infestation.
• Travel precautions are in effect. All dogs and cats — including U.S.-origin dogs returning from Mexico — must meet USDA APHIS requirements for screwworm freedom certification upon re-entry into the United States. Pet owners planning travel to Mexico should consult their veterinarian in advance. Certain medical documents are required for travel.

The AVMA is working closely with the USDA, FDA and CDC to track this rapidly evolving situation and is available to provide expert veterinary perspectives.