Screwworm Detected for First Time in Arizona as Outbreak Spreads
New World screwworm was found in Arizona for the first time, detected in a dog, as cases of the deadly parasite accelerate.
For the first time, the New World screwworm has been discovered in Arizona, detected in a canine resident of Cochise County. This marks the first appearance of this parasitic fly, whose larvae can bore into animal wounds, which had previously been largely contained within Texas. As of now, there have been 71 confirmed cases of screwworm across the US since the outbreak began, with 18 cases still active, predominantly in New Mexico.
The recent surge in October follows the first detection of the screwworm in wildlife last week, a development of concern for cattle ranchers whose livestock traverse the same landscapes. This outbreak has reignited the USDA's decision to reopen ports in Arizona and New Mexico for cattle shipments from Mexico, after a pause that began in late August and was somewhat relaxed in late August.
While screwworm primarily poses a threat to cattle, it has also affected a variety of other animals, including goats, horses, and even a cat.
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