USDA Opens Mexican Facility for Controlling Spread of Flesh-Eating New World Screwworm

The parasite has been detected 70 miles from America’s border with Mexico.
USDA Opens Mexican Facility for Controlling Spread of Flesh-Eating New World Screwworm
Larvae of the screwworm fly, collected from infected cows, are observed at the COPEG sterile fly production plant, which fights the spread of the cattle screwworm, in Pacora, Panama, June 11, 2025. Enea Lebrun/File Photo/Reuters
|Updated:
0:00
A new sterile fly dispersal facility has been opened in Tampico, Mexico, as part of efforts to fight against the spread of harmful New World screwworm (NWS) flies into the United States, the U.S. Department of Agriculture (USDA) said in a Nov. 13 statement.
NWS parasites can cause significant damage to livestock. Female flies lay eggs on wounds or orifices of warm-blooded animals. When the eggs hatch, the larvae burrow into the wound, feeding on the flesh. As more eggs hatch and feed, the wound becomes deeper and larger, eventually killing off the animal. A single female NWS can lay up to 3,000 eggs in its lifetime. As such, a large swarm of these parasites can be devastating for cattle farmers.
Naveen Athrappully
Naveen Athrappully
Reporter
Naveen Athrappully is a news reporter covering business and world events at The Epoch Times.