Flesh-eating flies are eating their way through Mexico, CDC warns

The US Centers for Disease Control and Prevention issued a health alert to clinicians Tuesday, warning that the savage, flesh-eating parasitic fly—the New World Screwworm—is not only approaching the Texas border, but also felling an increasing number of animals in the bordering Mexican state of Tamaulipas.

The advisory, released through the agency's Health Alert Network, directs doctors, veterinarians, and other health workers to be on the lookout for patients with wounds teeming with ferocious...