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New World Screwworm Fly Returns, Cattle Imports Halted

5/20/2025

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Summary

Story summary

The dreaded New World Screwworm fly, absent from America since 1966, is making a comeback, leading U.S. officials to halt imports of live cattle and livestock from Mexico. This menacing pest threatens both animals and humans, with the CDC cautioning that individuals with open wounds or weakened immune systems are particularly at risk.

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Story summary

The dreaded New World Screwworm fly, absent from America since 1966, is making a comeback, leading U.S. officials to halt imports of live cattle and livestock from Mexico. This menacing pest threatens both animals and humans, with the CDC cautioning that individuals with open wounds or weakened immune systems are particularly at risk.