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First New World screwworm case in U.S. cattle in 60 years confirmed by USDA

Tanya Lewis

12d ago· 5 min readenNews

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Summary

The first case of New World screwworm in a U.S. cow in about 60 years has been confirmed by the USDA. This parasitic fly lays eggs in open wounds or orifices of warm-blooded animals (including humans), and the maggots burrow through flesh, causing extensive damage. The pest was previously eliminated in the U.S. in 1966, making this a significant re-emergence in livestock.

Key quotes

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The first case of the New World screwworm in a U.S. cow in about 60 years has been detected, the U.S. Department of Agriculture confirmed yesterday.

It is the first instance of the agricultural pest in cattle since it was eliminated in the U.S. in 1966.

Screwworms are parasitic flies that lays their eggs in open wounds or cuts or in the eyes, ears, mouth, nose or genitals of warm-blooded animals—including humans.

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This marks the first case of the New World screwworm in U.S. livestock since the parasite was eliminated in the country in the 1960s

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