The New World screwworm has made an unwelcome comeback in the United States 60 years after its eradication. This flesh-eating fly targets livestock and other animals.
Federal officials revealed the presence of this parasite in a 3-week-old calf in Texas. The fly’s larvae are notorious for feeding on the tissue of livestock, wildlife, and pets. Untreated infections can be fatal.
The screwworm was pushed out of North and Central America through a vigorous eradication campaign. Despite this, their population persisted in South America and has been gradually moving north. Recent years have seen their approach toward the U.S. border.
The return of screwworm poses a challenge for cattle farmers and could impact beef prices due to potential damage to livestock, as noted by Caleb Hubbard, an entomologist at New Mexico State University. These pests do not discriminate among hosts, also posing risks to wildlife, pets, and occasionally humans.
Efforts are underway by federal and state officials to contain the screwworm infestation in Texas. Officials assert that the public faces minimal risk. Agriculture Secretary Brooke Rollins emphasized collaboration and adherence to animal treatment and movement guidelines to prevent the pest from establishing itself.