The flesh-eating New World Screwworm, eradicated in the U.S. since 1966, re-emerges due to a Mexico outbreak.

The New World Screwworm, a flesh-eating fly eradicated in the U.S. in 1966, has re-emerged following an outbreak in Mexico. The fly’s larvae burrow into living animals, causing severe damage and a condition called myiasis in rare human cases. The USDA has suspended live cattle, horses, and bison imports through southern ports and is working with Mexican authorities to contain the outbreak, monitoring the situation closely.