HEALTH

Screwworm cases rise; infested zone expanded in Texas

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Texas officials reported that confirmed New World screwworm cases increased to 20 this week, with the latest detection in Medina County. State agencies expanded an infested zone to include parts of Medina, Bandera and Uvalde counties, urged ranchers to inspect animals, and cited sterile male fly releases as a primary containment strategy. Austin-area authorities and county health districts said Tuesday that Williamson County has no confirmed cases but emphasized early detection and veterinary consultation for potential human exposure. Federal and state responses include quarantine zones, trapping, sterile-fly releases and emergency drug approvals; lawmakers and agencies have communicated with the USDA as coordination and surveillance continue.

Prepared by Olivia Bennett and reviewed by editorial team.

Timeline of Events

June 3, 2026: USDA confirms re-emergence of New World screwworm in the U.S.
Early June 2026: Initial cases detected across Texas and southeastern New Mexico; containment measures begin.
Mid-June 2026: Quarantine zones established; sterile male fly releases and trapping deployed.
June 18, 2026: Local coverage urges vigilance; some counties report no local cases but advise checks.
Late June 2026: Confirmed cases reported at 20; infested zone expanded to parts of Medina, Bandera, and Uvalde counties.

Why This Matters to You

The rising screwworm cases in Texas could impact your health and safety. If you're in the expanded infested zone, be vigilant. Check your pets and livestock for signs of infestation. Consult a vet if you suspect exposure.

The Bottom Line

The containment strategy is in full swing with sterile male fly releases and quarantine zones. Officials are working hard to manage this situation. Remember, early detection is key. Worth forwarding if you know someone in the affected areas.