Flesh-eating screwworm is back in the USA: What to know about the threat to cattle, beef prices, and humans

According to the USDA, the New World screwworm has been detected in Zavala County, Texas. Here’s the latest update. U.S. officials have confirmed the presence of a flesh-eating maggot in the United States that has the potential to devastate livestock populations and, as a result, send beef prices spiking.