What changed
2026-09-13 22:28 UTC → 2026-09-22 21:28 UTC ·
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In early August By late September 2026, Mexico’s federal and state health secretariats rolled out preventive actions against zoonotic and food-borne threats, including warnings about the livestock-infesting Gusano Barrenador in Chihuahua, vector-control against Aedes aegypti cattle screwworm (Cochliomyia hominivorax) outbreak in Mexico City, and gastrointestinal disease outreach has escalated into a significant human health crisis. Human infections have quintupled compared to 2025, with 575 cases recorded in Coahuila. Mosquito control efforts expanded 2026 alone across 27 states. These infections have resulted in Hidalgo, Mexico, where the National Water Commission conducted fumigation around the Rojo Gómez reservoir. Simultaneously, Don Benito, Spain, approved a municipal vector-surveillance plan targeting West Nile virus using larvicides and natural predators. By mid-August, dengue prevention intensified four deaths in Guanajuato, reaching over 2.6 million people through nebulization Oaxaca, Querétaro, Veracruz, and indoor spraying. In Aguascalientes, Yucatán, with Chiapas and Veracruz reporting the State Health Secretariat also launched nebulization sessions scheduled through late August highest caseloads. The pest continues to eliminate adult mosquitoes. Concurrently, Mexico impact livestock and wildlife; Sonora has intensified its national strategy to combat reported 69 active cases across 11 municipalities. In response, the cattle screwworm Museo del Desierto in Coahuila has implemented fly (gusano barrenador). Coordinated by Senasica and the Ministry of Agriculture (Sader), the effort utilizes over 600,000 artisanal traps made from reused plastic bottles and organic attractants. This initiative has captured 16 million flies and involves more than 400,000 farmers. A National Commission for the Attention of the Cattle Screwworm has medical protocols, while veterinary teams have been formed alongside 23 state committees deployed to ensure El Fuerte, Sinaloa, to assist producers. Concurrently, dengue fever is seeing a unified response. In Jalisco, authorities have inspected over 158,000 animals, while Chihuahua has reported over 137 cases across 27 municipalities. surge in Campeche, Mexico. The outbreak state has caused economic uncertainty, with potential losses of approximately $1 billion due to livestock border closures with the United States. By late August, mosquito control expanded into Guerrero and Campeche. In Chilpancingo, Guerrero, authorities initiated preventive nebulization confirmed 42 cases in “red zones” or “hot blocks” following 2026, doubling the detection of increased Aedes Aegypti eggs. Although Guerrero reported 21 confirmed cases—the lowest cases reported during the same period in three years—officials stated preventive measures are essential to avoid resurgence. In Campeche, officials 2025. Notably, 24 of these cases are preparing classified as dengue with warning signs or severe dengue, with the municipality of Carmen identified as a biological control program using Wolbachia bacteria for launch in November. primary hotspot. This follows a broader regional trend, as the Pan American Health Organization reported over 1.6 million suspected dengue cases across the Americas through late August 2026.