9 Jan 2026

Epidemiological Alert Simultaneous circulation of seasonal influenza and respiratory syncytial virus - 9 January 2026

On 4 December 2025, the Pan American Health Organization/World Health Organization (PAHO/WHO) issued an alert regarding the possibility of early or more intense activity of respiratory viruses during the 2025-26 season, as compared to previous years. In this context, and based on the behavior observed to date, PAHO/WHO recommends that Member…