The USDA bans Mexican cattle imports after screwworm discovery, prompting Texas officials to warn about the parasite's threat ...

The emergence of the New World screwworm in Mexico has raised alarms that the dangerous fly larvae could cross into Texas.

Screwworm has just been detected for the first time in a human in Costa Rica. Local news outlets have reported that a man from the Altamira de Pavones area was tested for the infectious disease ...

Animals may die from secondary infection or toxicity in 7-14 days if not treated. How is it transmitted? An adult screwworm fly can travel up to 125 miles before laying hundreds of eggs in a wound ...

The eggs hatch into painful larvae, and then maggots “screw into flesh with sharp mouth hooks” leading to a parasitic infection. TPWD officials said female screwworm flies are drawn to the ...

Infections can be deadly and are often serious ... As more were dropped, the screwworm began to disappear in the state and by 1959, the fly was gone from the Southeast. 'From there, the snowball ...

Nolen RS. Mexico screwworm case triggers US emergency response. American Veterinary Medical Association. Published December ...

TPWD officials said screwworm infection can be prevented by cleaning and covering wounds and applying insect repellant, especially if traveling to areas with New World Screwworm.

Screwworms can devastate livestock herds. The discovery of a single screwworm infection among cattle in Mexico a few weeks ago has raised concerns that an infestation could happen in Texas ...