First U.S. Human Case of Flesh-Eating Screwworm Detected

A Maryland resident who traveled to El Salvador has been diagnosed with the rare New World screwworm, marking the first U.S. case linked to travel to an outbreak area. The parasite, which lays eggs in open wounds and can cause flesh-eating larvae, poses low risk to the public but is a concern for livestock and rural communities. The individual has recovered, and no transmission has been reported. Prevention includes avoiding insect bites and keeping wounds covered, while treatment involves removing the larvae. Scientists are monitoring the situation as the parasite's northward spread remains a concern.