LivestockFive cases are active in Texas and New Mexico, more than 1.4 billion sterile flies have been released since June, and a Mexican town is protesting the smell of a sterile fly plant.
LivestockThe finding could help explain why females mate only once and may one day improve the sterile-fly technique used to fight the livestock pest, now back in Mexico and Texas.
LivestockThe Texas Department of Agriculture's Del Rio Livestock Export Facility has reopened to horse exports after talks between USDA's APHIS and Mexico's SENASICA, with extra checks for New World screwworm.
LivestockThe border crossing that handled about 43% of cattle imports will take 750 to 1,600 head a day under treatment rules, but experts say beef prices will not fall soon.
LivestockThe Foundation for Food & Agriculture Research and the University of Notre Dame are putting $140,389 into a rapid study of an FDA-approved drug as a new weapon against New World screwworm.
USDA confirmed the Grant County case on Thursday, the state's second since June, hours after Secretary Brooke Rollins announced that the Santa Teresa port of entry would reopen to Mexican livestock on 24 September; the port is about 150 miles away.
Researchers at the University of California San Diego and San Diego County public health built a tracking tool that combines confirmed detections, fly-friendly environmental conditions and news reports to estimate New World screwworm risk for every US county; access is limited to officials for now,
LivestockNew World screwworm larvae were found on 9 September in a hind-limb wound of a working horse in Presidio County; Texas has restricted animal movement out of an infested zone and US Equestrian is telling owners to check wounds every day.
LivestockOn 29 July 2026 the US Department of Agriculture pledged $25 million for a sterile fly dispersal facility in Douglas, Arizona, which would be the country's second after one in Texas.
LivestockUSDA announced on 24 July 2026 that the Douglas, Arizona port would reopen to Mexican cattle on 24 August, with two New Mexico ports to be considered later and every animal inspected for New World screwworm.
