Screwworm’s Return to the US Sets up Yearslong Fight

For the first time in about fifty years, the New World screwworm is back in US livestock. Bloomberg's Ilena Peng explains how the parasitic fly will affect beef prices and how the USDA is responding. (Source: Bloomberg) For the first time in about fifty years, the New World screwworm is back in US livestock. Bloomberg's Ilena Peng explains how the parasitic fly will affect beef prices and how the USDA is responding. (Source: Bloomberg)