Possible flesh-eating screwworm infection detected in South Texas, USDA says

A potential case of New World screwworm has emerged in South Texas, raising alarms among agricultural authorities. If confirmed, this would mark the first instance of these invasive flesh-eating flies crossing the US-Mexico border, a situation that has been escalating as the pests have made their way north from Central America in recent years. On Wednesday, the US Department of Agriculture (USDA) announced that a sample suspected to be screwworm is currently undergoing confirmatory testing at their National Veterinary Services Laboratories in Ames, Iowa. The agency stated in a social media update, "We have already activated personnel on the ground and are collaborating with local partners to address this concern. Updates will be provided as soon as results are available." The threat is particularly troubling for the US cattle industry, which has been on edge following rumors of a screwworm detection. While the parasite can affect various animals, it poses a significant risk to livestock. Female screwworms lay their eggs in the wounds of warm-blooded animals, allowing their larvae to consume the host’s flesh, resulting in severe and potentially fatal injuries. Historically, screwworms were prevalent in the US but were eradicated during a comprehensive control effort in the 1960s. The USDA has estimated that preventing these pests from re-entering the country saves the livestock industry approximately $900 million annually. However, recent cases in Central America have raised fears of a resurgence. Notably, on May 28, a case involving a 5-year-old goat was reported just 25 miles from the border in Coahuila, Mexico, with additional cases detected in calves close to the Texas border. In a media briefing, Agriculture Secretary Brooke Rollins emphasized the gravity of the situation, stating, "There is no doubt that this is a very, very serious threat to our livestock." However, her comments regarding the proximity of the screwworm to US territory have sparked some controversy. A Texas state representative recently claimed that a screwworm case had been identified just one mile from the Texas border, a statement that was subsequently refuted by both Rollins and the USDA.