Zavala County

Place

County in southwest Texas where first U.S. screwworm cases were confirmed in 2026

3 stories

Screwworm Fly Infestation Detected in US, Threatening Cattle Industry

Screwworm Border Closure Creates Economic Divide Between Mexican Beef Exporters and Texas Ranchers

Texas Detects First US Screwworm Infestation Since the 1960s