Arizona reports 6 new cases of screwworm

 

Dashboard: USDA

Headline:  KOLD, 11/11/2026

Emilio Reyes reports:

Arizona now has six confirmed cases of the New World screwworm, and while all cases have involved domesticated animals, local wildlife advocates are raising concerns about the potential impact on wild animals across the state. 

On Tuesday, the University of Arizona hosted a discussion about the flesh-eating parasite, giving residents an opportunity to learn more about the New World screwworm and how to recognize signs of an infestation. 

The six confirmed cases in Arizona involve three horses, two dogs and one sheep. 

The New World screwworm is a parasitic fly whose larvae feed on the living tissue of warm-blooded animals. It can affect pets, livestock and wildlife, and in rare cases, humans.

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Texas restricts movement of warm-blooded animals in 14 counties.  (11/2)

October 2026

Screwworm moves into Arizona.  (10/31)

July-August 2026

Trump World:  Open borders for immigrants?  NEIN!  Open borders for possibly screwworm-infected cattle?  JA!!  (8/31)

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Screwworm is all over the place in much of Mexico.  (8/21)

Number of screwworm cases in U.S. hits 44.  (8/3)

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Screwworm tally in United States reaches 37.  (7/15)

The Brooke Rollins Amateur Hour @USDA doesn't bode well for corralling screwworm outbreak.  (7/13)

June 2026

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January-April 2026

New World Screwworm hitchhikes its way to the U.S.-Mexico border.  (4/29)

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Screwworm detected in Mexico less than 50 miles from United States border.  (1/21)

2025

New World screwworm:  Next stop, Laredo Texas.  (9/28)

New World screwworm double vision.  (8/8)

New World screwworm, not yet in United States, is already screwing us at the meat counter.  (7/31)

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