4 Dec 2025

Epidemiological Alert Seasonal Influenza in the Americas Region: End of the 2025 Season in the Southern Hemisphere Start of the 2025-26 Season in the Northern Hemisphere - 4 December 2025

Given the start of the season of increased circulation of influenza and other respiratory viruses in the northern hemisphere, the Pan American Health Organization/World Health Organization (PAHO/WHO) recommends that Member States adjust their preparedness and organization plans for health services in anticipation of a possible overload of the…