06/18/2026
The CDC issues formal emergency response amidst New World Screwworm resurfacing in Texas and New Mexico.
Eradicated from the US since 1966, the New World Screwworm has now been found in livestock in Texas and as of one week ago, a dog in Lea County, New Mexico (southeastern New Mexico). Rez Vet’s own Dr. Lizzy was recently interviewed regarding the New World Screwworm.
"Rez Vet is taking this very seriously. There is always new information and recommendations coming out that we are trying to stay on top of to follow the USDA and FDA guidelines," said Schnabel. "There are medications that have received emergency and conditional approval to treat (New World Screwworm). Rez Vet does carry those medications so we can start treatment. Many of those medications are routine dewormer or flea/tick prevention that we recommend for our patients already, so NWS is just another reason to try to keep your pets up to date on this kind of routine care." - Dr. Elizabeth Schnabel, Medical Director for Rez Vet.
Read more here about why owners of livestock AND dogs need to be increasingly vigilant regarding this dangerous fly.
Federal officials now report six cases of New World screwworm in the United States. None are yet in Arizona.