Screwworm Alert: New Cases Confirmed in U.S.

New World screwworm cases have risen, with Secretary of Agriculture Brooke Rollins confirming three additional instances in the U.S., including two in Texas. While the USDA assures a "very low" risk to humans and animals, screwworm infections begin when flies lay eggs on animal wounds, with larvae feeding on live tissue.

Veterinarians strongly advise pet owners to utilize year-round prescription flea and tick preventatives, as these products are now authorized for screwworm treatment and prevention. For dogs in affected areas, a topical permethrin product can offer extra protection by repelling biting flies. Ensuring wounds are kept clean and consulting a veterinarian for any abnormal wound healing are paramount.

Pet owners in or near official quarantine zones are advised to keep pets with open wounds indoors or under strict supervision when outdoors until wounds are healed. Despite the unsettling nature of the parasite, experts stress that screwworms are easily recognizable by officials and do not spread between animals like viruses, with livestock posing the greatest risk. Information is available at www.screwworm.gov.