ALERT: On June 3, 2026, the Texas Animal Health Commission (TAHC) received confirmation of a detection of New World screwworm (NWS) in Zavala County, Texas, in a three-week-old calf.
Find the announcement, with more details from TAHC, here.
While no dairies are in the South Texas infected zone, and Texas’ dairy centers are hundreds of miles from the current NWS location, TAD has been closely monitoring the NWS spread northward through Mexico and will continue to be vigilant.
The spread of the New World screwworm would pose a serious threat to the health of livestock and the livelihoods of dairy farmers in Texas, the nation’s fourth largest milk producing state.
Below you will find useful information and resources to help safeguard herds, the milk supply and the long-term sustainability of the Texas dairy industry.
The Texas Association of Dairymen is a member of the Texas Screwworm Coalition.
Fact Sheets:
- Texas Screwworm Coalition
- New World Screwworm Resources and Updates – Texas Animal Health Commission
- New World Screwworm Resources and Updates – Texas A&M AgriLife Research and Texas A&M AgriLife Extension Service
- USDA Unified New World Screwworm Website – U.S. Department of Agriculture
Policy Initiatives:
Other Resources:
