The first case of New World screwworm has been found in a calf in the northern Mexican border state of Tamaulipas.

New World screwworm larva, like the one pictured, will hatch and feed on the flesh of living animals, typically cattle. Cases in humans are rare but can be fatal. (AP | USDA Agricultural Research ...

The New World screwworm fly is a type of blowfly whose larvae feed on the flesh of their victims. Currently, the parasite is spreading in North America, threatening not only livestock but also dogs, ...

Flesh-eating screwworm larvae poised to invade the US have snuck into Maryland via the flesh of a person who had recently traveled to El Salvador, upping anxiety about the ghastly—and economically ...

Although the New World screwworm has been eradicated from the United States for many years, the recent movement of the pest ...

A person in Maryland was recently infected by the flesh-eating New World screwworm after traveling to El Salvador, US health officials confirmed this week. The blowflies primarily affect livestock — ...

The U.S. has reported its first human case of the flesh-eating parasite called New World screwworm, according to the U.S. Department of Health and Human Services (HHS). The case involves a patient in ...

Two cases of the New World screwworm, a costly pest that has devastated livestock producers and wildlife in the past, were found in northern Mexico in recent weeks, but the fly has yet to make it into ...

The U.S. has confirmed its first human case of the New World screwworm, a flesh-eating parasite whose northward creep from South America has put the country's cattle industry on high alert in recent ...