Mexico Reduces Spread of Avian Influenza by 45%

Mexico’s National Service for Agri-Food Health, Safety and Quality (SENASICA) reported a 45% reduction in the spread of low-pathogenic avian influenza AH5N2 across the country. The decrease follows ongoing epidemiological surveillance in poultry production units, demonstrating the effectiveness of collaboration between health authorities and the industry.  

According to SENASICA’s General Directorate of Animal Health, 137 municipalities reported the presence of the virus in 2H24. However, as of early 2025, the number dropped to 75 municipalities. In response, the agency authorized strategic vaccination in the affected areas, located in Coahuila, Durango, Guanajuato, Hidalgo, Jalisco, Michoacan, Morelos, Nayarit, Puebla, Queretaro and San Luis Potosi. 

SENASICA continues epidemiological surveillance in both urban and natural areas, including wetlands and bodies of water where wild birds that may carry the virus are present. Technicians collect samples from these birds, and based on laboratory results, the General Directorate of Animal Health determines strategic measures to protect the country’s poultry production. These include authorizing vaccinations only in regions at risk of disease.