Flesh-Eating Screwworm Confirmed in Texas, Raising Alarm Over U.S. Livestock Industry

A dangerous flesh-eating parasite known as the New World screwworm has been confirmed in Texas cattle, according to the U.S. Department of Agriculture (USDA), sparking concern across the American livestock industry.

Officials confirmed that the parasite was detected in a young calf in South Texas, marking the first confirmed domestic case in decades. The screwworm, a parasitic fly whose larvae feed on the living tissue of warm-blooded animals, was previously eradicated in the United States in the 1960s after a major control program.

The discovery has prompted immediate containment measures, including quarantine zones, movement restrictions on animals, and increased surveillance in affected areas. Veterinary teams and federal authorities are working to prevent the spread of the parasite, which is known to cause severe and often fatal infections in livestock if left untreated.

The outbreak is particularly concerning for cattle producers, as Texas is one of the largest livestock-producing regions in the country. Experts warn that an uncontrolled spread could result in significant economic losses and disruptions to beef production and supply chains.

The screwworm has been gradually moving north through parts of Central America and Mexico in recent years, raising ongoing concerns about its potential return to the United States. Officials say continued monitoring and rapid response efforts will be critical in preventing a wider outbreak.

Despite the alarming nature of the parasite, authorities emphasize that the risk to humans and the food supply remains low, and that swift action is underway to contain the situation. 

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