The pest does not pose a food safety risk to humans, but it is a threat to already strained U.S. cattle herds.

June 5, 2026 – The federal government is urging cattle ranchers to take precautions to combat further spread of New World screwworm (NWS) flies, following the first domestic detection since the 1960s on Wednesday. The U.S. Department of Agriculture’s (USDA) Animal and Plant Health Inspection Service (APHIS) confirmed the presence of NWS in cattle in […]

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