Federal response intensifies as rare parasite resurfaces in Texas ranch livestock Federal authorities are scrambling to contain a worrying outbreak of New World screw-worm cases, with the number of reported infections now rising to seven. This marks the first appearance of this devastating parasite on US soil in sixty years, stirring concern among livestock owners, veterinarians, and public health officials alike. The USDA has ramped up emergency response efforts to prevent the parasite from spreading further in Texas and potentially beyond.USDA Secretary Brooke Rowlands visited the Chapa Rosa ranch in