Possible flesh-eating screwworm case in Texas, USDA says
The USDA is investigating a possible case of the flesh-eating New World screwworm in Texas after it was detected near the U.S. border. A sample from a 3-week-old calf in Zavala County has been sent for confirmation. The presence of the screwworm has raised concerns as it has been increasingly found closer to the U.S. in recent months.
- ▪The USDA confirmed the presence of New World screwworm in a calf in Zavala County, Texas.
- ▪The screwworm was detected just 25 miles from the U.S. border in Mexico.
- ▪At least 26,216 screwworm cases have been identified across Mexico, with many remaining active.
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HealthWatch Possible flesh-eating screwworm case in Texas after pest detected 25 miles from U.S. border, USDA says .chip { background-image: url('/fly/bundles/cbsnewscore/images/chip-bgd/chip-bgd-healthwatch.jpg'); } By Emily Mae Czachor Emily Mae Czachor News Editor Emily Mae Czachor is a reporter and news editor at CBSNews.com. She typically covers breaking news, extreme weather and climate. Emily Mae previously wrote for outlets like the Los Angeles Times, BuzzFeed and Newsweek. Read Full Bio Emily Mae Czachor Updated on: June 3, 2026 / 10:03 PM EDT / CBS News Add CBS News on Google Update: The USDA has confirmed the presence of New World screwworm in a 3-week-old calf in Zavala County, Texas.
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