The USDA has confirmed the first case of New World screwworm in Texas. The parasitic pest was confirmed June 3 by the USDA's Animal and Plant Health Inspection Service (APHIS). The case involves a calf in Zavala County; no additional cases have been detected at this time. A 20-kilometer quarantine zone is being established around the detection site. The USDA and partner agencies are implementing other steps to contain and eradicate the pest. New World screwworm flies lay their eggs in open wounds and mucous membranes of warm-blooded animals. The larvae burrow into the flesh of...
