Fearing a resurgence of the New World Screwworm parasite in the U.S., the Department of Agriculture block livestock imports from Mexico.

The New World Screwworm, a parasitic fly, has re-emerged as a potential threat to livestock and humans in the United States.

The fly gets its name for how its maggots feed on an animal by burrowing, or screwing, into an open wound, creating "extension damage by tearing at the hosts' tissue with sharp mouth hooks," the ...

Maggot therapy is a wound healing technique in which healthcare professionals apply medical grade maggots to dead or infected tissue to keep the wound clean. It is also known as larval therapy.

The fly is named for how its maggots burrow, or screw, into an open wound using "its sharp mouth ... in some rare cases humans, the USDA says. The ban, which affects animals coming from and ...

The fly is named for how its maggots burrow, or screw, into an open wound using "its sharp mouth ... in some rare cases humans, the USDA says. The ban, which affects animals coming from and ...