Food Blog

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The Food Blog covers our latest research and extension work to advance and optimize the production and vitality of California's abundant agricultural commodities.

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Closeup image of New World screwworm

A flesh-eating fly has returned to the U.S. What now?

June 5, 2026
By Jules Bernstein
New World screwworm poses an existential threat to cattle farming and dairy production. While the U.S. Department of Agriculture officially declared the parasite eradicated from the country in 1966, several notable outbreaks have occurred since then. One of those is happening now.
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