Screwworm Cases Jump: Farmers, Ranchers, And Pet Owners Are On Edge

A total of 12 screwworm cases have been confirmed across two states as of June 15. The New World screwworm, a parasitic fly that feeds on the tissue or flesh of warm-blooded animals in its larval stage, continues to spread in the United States. Ranchers have become increasingly concerned as the deadly pest has now ...