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 maggots burrowing into their living flesh. The alert also provides guidance on what to do if any such festering wounds are encountered—namely, remove each and every maggot to prevent the patient from dying, and, under no circumstance allow any of the parasites to survive and escape.
The New World Screwworm (NWS) is a fly that lays its eggs—up to 400 at a time—in the wounds, orifices, and mucus membranes of any warm-blooded animal. The eggs hatch into flesh-eating maggots, which look and act much like screws, twisting and boring into their victims while eating them alive.
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