06/25/2026
π¨ NEW WORLD SCREWWORM UPDATE β June 24, 2026 π¨
We have an important update to share.
π΄ NEW CONFIRMED COUNTY ADDED
Medina County has reported a confirmed screwworm case in cattle as of June 24, 2026.
This brings Texas to 8 confirmed counties currently being tracked on our HFR map.
What Changed Today
β Medina County added to Confirmed Cases (cattle)
Current Confirmed Case Counties
π΄ Crockett
π΄ Tom Green
π΄ Edwards
π΄ Gillespie
π΄ Zavala
π΄ La Salle
π΄ Medina (NEW)
π΄ Sutton (USDA currently lists as inactive β prior confirmed case)
Why This Matters
Medina County moves confirmed activity closer to Central Texas, making daily livestock checks even more important.
Please check animals daily for:
β Maggots in wounds
β Foul odor
β Bloody drainage
β Wounds not healing
β Excessive licking / irritation
Pay close attention to:
β’ Open wounds
β’ Branding sites
β’ Castration / dehorning sites
β’ Newborn navels
β’ Ears, nose, eyes, and mouth
π’ At this time, Hamilton and surrounding local reference counties still have NO confirmed cases.
π‘οΈ Now is the time to continue prevention efforts.
Prevention remains one of the best defenses against screwworm.
β Inspect animals daily
β Treat fresh wounds quickly
β Keep fly control measures in place
β Monitor newborns and recent procedures closely
Remember:
π’ No maggots = Prevention
π΄ Maggots present = Treatment (Act Fast!)
If you suspect screwworm, contact your veterinarian or TAHC immediately.