06/04/2026
The Texas Animal Health Commission (TAHC) has confirmed a case of New World Screwworm (NWS) in Zavala County, Texas. In response, TAHC and the USDA have established an infested zone in the area, implemented animal movement restrictions, and expanded surveillance and fly-trapping efforts to prevent further spread. Targeted releases of sterile screwworm flies are also being used as part of the eradication strategy.
View infested zone here: https://tahc.maps.arcgis.com/apps/instant/basic/index.html?appid=fc8902674b004a778f44e3fe219c255f
View animal movement restrictions here:https://www.tahc.texas.gov/regs/pdf/2026-06-3-NWS-Zone01.pdf
View USDA NWS response playbook here:https://www.aphis.usda.gov/sites/default/files/nws-response-playbook.pdf
Learn more about NWS at screwworm.gov and get current Texas updates and resources at https://www.tahc.texas.gov/emergency/nws.html.
