USDA Confirms Second Case of Screwworm Fly in Texas, Urges Vigilance
USDA confirms second screwworm fly found in Texas

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The USDA has confirmed a second case of the New World screwworm in Texas, detected in a calf in Zavala County. This parasite poses a significant threat to cattle, potentially leading to $1.8 billion in economic losses. Enhanced control measures are being implemented.
- 01The second New World screwworm case was found in a one-month-old calf in Zavala County, Texas.
- 02The USDA has deployed mobile response trailers and is conducting sterile fly releases, totaling 6 million flies weekly.
- 03The New World screwworm could lead to $1.8 billion in losses for Texas, the leading cattle-producing state.
- 04Surveillance and movement control zones are established to manage the outbreak.
- 05Texas livestock producers are urged to remain vigilant against this invasive pest.
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The U.S. Department of Agriculture (USDA) confirmed a second case of the New World screwworm in Texas, detected in a one-month-old calf in Zavala County. This parasite, which feeds on the living tissue of warm-blooded animals, poses a severe threat to the cattle industry. Found less than six miles from a previous case, the USDA is taking swift action to contain the outbreak. Dudley Hoskins, the USDA's under secretary for marketing and regulatory programs, emphasized the department's preparedness and response. Since 2023, the screwworm has been moving north from South America and Central America. If left unchecked, an outbreak could cost Texas $1.8 billion in economic losses and $732 million annually for producers. The USDA has implemented movement control zones, intensified surveillance, and started releasing millions of sterile flies weekly to combat the pest. Texas Farm Bureau President Russell Boening has called for vigilance among livestock producers and residents to manage the invasive species effectively.
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The screwworm outbreak poses a significant risk to Texas's cattle industry, potentially leading to severe economic losses.
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