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US Agriculture Dept confirms first detection of New World screwworm in US wildlife

By Thomson Reuters Oct 21, 2026 | 5:17 PM

WASHINGTON, Oct 21 (Reuters) – The US Department of Agriculture said on Wednesday it has confirmed the ​first detection of flesh-eating parasite ‌New World screwworm in US wildlife in an elk in Pecos County, Texas.

• The elk was located on a game ranch ‌and ​was reported after ⁠being harvested by a ⁠hunter, the USDA said in a statement.

• The Texas Animal Health Commission will modify a previously established ​infested zone, and the USDA and the Texas Parks and Wildlife ⁠Department are conducting ⁠additional wildlife surveillance in the ​area, the USDA said.

• Eradicated from ​the US decades ago, the pest ‌has surged north from Central America through Mexico, prompting Washington to impose a more than year-long ban on ⁠Mexican cattle imports.

• The US halted livestock imports from Mexico last year to keep ⁠out ‌screwworm but resumed trade in ⁠August at an Arizona ​port ‌as part of a phased ​reopening plan.

• ⁠The halt helped tighten US cattle supplies and push beef prices to record highs for American consumers.

(Reporting by Kanishka Singh in Washington; Editing by ​Matthew Lewis)