Screwworm Parasite Threatens Texas Cattle Industry Amid Climate and Policy Concerns
Screwworm Parasite Threatens Texas Cattle Industry Amid Climate and Policy Concerns
US · Published Jun 12, 2026
The New World screwworm, a parasitic fly that feeds on the living tissue of warm-blooded animals, has re-emerged in the United States, threatening the cattle industry.
According to AP News, the parasite was detected in Texas for the first time in six decades, with seven cases already reported in Texas and New Mexico.

Why It's Important?

The screwworm outbreak poses significant risks to the U.S. cattle industry, which could face devastating losses if the parasite spreads unchecked. While the parasite does not affect food safety, it can cause severe injuries and death in livestock, leading to economic losses. The USDA estimates over $1 billion will be required to manage the outbreak and protect herds. Trade restrictions with Mexico and Canada have already been implemented, affecting livestock movement and market dynamics. Additionally, the warming climate is creating more favorable conditions for the screwworm, increasing the likelihood of further spread.

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