The U.S. Department of Agriculture confirmed a second New World screwworm case in a one-month-old calf in Zavala County, Texas, about 5.6 miles from the first detection announced earlier in the week. The first U.S. farm case in decades was found in a three-week-old calf in La Pryor, about 100 miles southwest of San Antonio and 50 miles from the U.S.-Mexico border. Federal and Texas officials have established a 20-kilometer control area around the detection site, including quarantines, movemen...

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