US confirms five cases of New World screwworm

09/06/2026

The authorities in the US have confirmed five cases of New World screwworm infestations in different animals. Four of the cases are in Texas, the fifth is in New Mexico. 

The US Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) said the situation was evolving and that its investigations were continuing. Under-secretary Dudley Hoskins, who heads up the work of APHIS, said: “We are working closely with our partners in New Mexico, Texas and across the region to ensure we identify, contain and respond to any potential cases as swiftly as possible.”  

USDA said New World screwworm poses a serious threat to livestock, wildlife, pets and, in rare cases, people. It said the parasite could cause animal suffering and significant economic harm if not detected and treated quickly. 

“We need the partnership of animal owners across the region,” Mr Hoskins said. “Please stay vigilant, check your animals closely and report anything that looks suspicious. Together, we can protect our livestock, our communities and the health of animals nationwide.” 

On June 8, the US government appointed a former chair of the US Meat Export Federation, John Bellinger, to the role of senior advisor for “New World screwworm preparedness”.