# Mexico's Battle Against Flesh-Eating Screwworm Outbreak US-Mexico border partially reopens for cattle imports after quarantine measures. - **Source:** [NYT > Science](https://brifing.si/source/794f9fbd-c10f-44d6-932d-9039af67922c) - **Published:** 2026-09-03 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/d033b4fc-76b8-4f21-aa9e-253b1ef45e4a ## Outbreak Origins A screwworm infestation in northern Mexico has caused significant livestock losses over the past year. These parasitic flies lay eggs in living tissue, causing fatal infections. The US banned live cattle imports from Mexico, creating economic hardship for local ranchers. Agriculture Ministry data shows this is the region's worst zoonotic outbreak in a decade. ## Quarantine Measures Authorities established a 200km quarantine zone in affected areas. Movement restrictions disrupted meat supply chains. Mexico's Agriculture Ministry deployed 15,000 veterinarians for sterilization campaigns. The USDA recently approved controlled imports from specific regions under new protocols. ## Economic Fallout The export suspension cost Mexico $1.2 billion annually. Farmer associations report $200 additional costs per animal. Retail sectors suffered from 30% meat price hikes. The World Organisation for Animal Health allocated emergency funds for biosecurity equipment. ## Scientific Countermeasures Researchers are using Sterile Insect Technique (SIT) to irradiate male flies. Facilities producing 50 million sterile flies weekly conduct aerial releases. Developed in 1950s US, this method succeeded in Cuba. Chiapas state reports 70% population reduction. ## Ranchers' Resistance Rural producers employ traditional methods, inspecting herds daily and isolating wounded animals. Local governments provided 50,000 families with training and medication. However, experts warn hygiene standards remain inadequate in remote areas. ## Cross-Border Cooperation The US and Mexico committed $25 million for joint action plans. A real-time data sharing system tracks cases across borders. Lessons from Panama's Screwworm Eradication Program inform current strategies. Veterinary teams hold weekly coordination meetings. ## Supply Chain Disruptions Processing plants operate at 40% below capacity. Logistics companies report triple shipping times due to quarantine checks. Retailers established alternative supply channels from Argentina and Brazil, though customs delays complicate solutions. ## Future Projections Experts predict 18 months for full containment. Biotech firms are developing genetically modified flies. Climate change increases risks of tropical disease spread. This crisis highlights the need for updated animal health protocols globally. ## Sources covering this story - https://www.nytimes.com/2026/09/02/world/americas/screwworm-facility-mexico.html — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._