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new world screwworm

Cochliomyia hominivorax, the New World screw-worm fly, or screw-worm for short, is a species of parasitic fly that is well known for the way in which its larvae (maggots) eat the living tissue
New World Screwworm Threat
October 24, 2025
⎯ Equine Disease Quarterly
The New World screwworm poses an increasing threat to horses in the U.S. as more cases are reported in Mexico.
USDA screwworm bulletin
Screwworm Special Bulletin
September 29, 2025
⎯ Edited Press Release
Horse owners should learn about the New World screwworm, which poses a threat to the U.S. horse population.
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