New World Screwworm in Texas
As of July 2026, Texas has 11 New World Screwworm alerts in the past 30 days (27 confirmed cases).
Risk Level
🔴 High
Active outbreak activity — consult your vet
Cases (30 days)
27
Total Cases
30
Counties Affected
12
Most recent New World Screwworm alert in Texas: Jun 29, 2026
New World Screwworm Alerts in Texas
Jim Hogg, Texas
Jun 29, 2026
1
confirmed
Tom Green, Texas
Jun 28, 2026
1
confirmed
Pecos, Texas
Jun 27, 2026
1
confirmed
Sutton, Texas
Jun 26, 2026
1
confirmed
Crockett, Texas
Jun 25, 2026
8
confirmed
Terrell, Texas
Jun 24, 2026
4
confirmed
Edwards, Texas
Jun 22, 2026
6
confirmed
Medina, Texas
Jun 20, 2026
1
confirmed
Uvalde, Texas
Jun 18, 2026
1
confirmed
Gillespie, Texas
Jun 15, 2026
1
confirmed
La Salle, Texas
Jun 14, 2026
2
confirmed
Zavala, Texas
Jun 3, 2026
3
confirmed
About New World Screwworm
A parasitic infestation (myiasis) caused by the larvae of the New World screwworm fly, which lay eggs in the open wounds or mucous membranes of live, warm-blooded animals. Unlike most maggots, screwworm larvae feed on living tissue, producing rapidly enlarging, potentially fatal wounds. Eradicated from the United State…
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