"South America's Old Enemy Returns: New World Screwworm Makes a Comeback in the U.S." A notorious parasite that once ravaged livestock across the southern United States has reappeared in the region, prompting a concerted effort by officials to eradicate it once again. The New World screwworm, a parasitic fly that lays its eggs in the flesh of animals, was largely driven out of the country in the 1950s and 1960s through a massive campaign involving the U.S. government and scientists. However, it seems that decades of progress have been undone, and the parasite has begun to migrate steadily northward from South America, threatening the region's livestock industry and wildlife. As officials scramble to contain the outbreak, experts are drawing on the same tried-and-true methods that proved effective in the past, but the question remains: can they stop the screwworm's resurgence before it's too late?
The U.S. spent decades driving the New World screwworm far into South America. But now the parasite has reemerged, and officials are working to beat it back yet again using many of the same tried-and-true methods as the government did in the 1950s. Experts have been tracking the path of parasitic fly as it moved steadily northward...
