Screwworms

The Surprising Link Between Cattle, Cocaine, and the Screwworm’s Comeback

Mon January 19 2026

The Surprising Link Between Cattle, Cocaine, and the Screwworm’s Comeback

Source: Kathy Voth - Founder, editor and publisher of ‘On Pasture

The New World Screwworm (Cochliomyia hominivorax), a parasitic fly once eradicated from North and Central America through decades of coordinated effort by governments and livestock producers, is making a troubling return—this time through a backdoor few anticipated: narco-funded cattle ranching. In parts of Central America, illegal ranching on protected lands has become a front for drug trafficking and money laundering. The ripple effects of this trend now threaten U.S. cattle producers with the resurgence of a deadly livestock pest.

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Articles on The Cattle Range are published because of interesting content but don't necessarily reflect the views of The Cattle Range.

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