Washington, Dec 10 - The Pan American Health Organization (PAHO) has called on countries in the region to adjust the preparedness of health services ahead of the peak season of influenza and other respiratory viruses circulation in the Northern Hemisphere.
PAHO emphasized that a combination of vaccination, surveillance, hospital preparedness, timely access to diagnosis and treatment, and personal preventive measures are key to reducing the disease burden, protecting the most vulnerable populations, and avoiding overloading health systems.
According to data reported up to the end of November, influenza activity continues to rise globally, especially due to type A viruses.
In the Americas region, although levels remain low, a sustained increase is recorded, particularly in North America.
Preliminary evidence suggests that the current vaccine maintains levels of protection similar to previous seasons, especially in preventing severe cases and hospitalizations.
PAHO called for strengthening surveillance of influenza, RSV, and SARS-CoV-2, as well as ensuring continuous data reporting and maintaining the regular sending of samples for sequencing to timely detect variants that may alter virus transmission or severity.
It reminded that unusual respiratory events—such as severe cases without an identified cause or outbreaks outside the expected circulation period—must be investigated and promptly reported in accordance with the International Health Regulations.
It also recommended reviewing and updating national clinical management guidelines, if necessary, reinforcing access to early diagnosis, and ensuring the availability of antivirals for people at higher risk of complications.
According to the epidemiological alert, health services should prepare for a possible increase in hospitalizations during the winter months, when circulation of multiple respiratory viruses coincides.
PAHO reiterated the importance of vaccination against influenza, COVID-19, and RSV, especially for older adults, people with chronic diseases, pregnant women, young children, and health workers.
Immunization during pregnancy and the use of monoclonal antibodies in newborns have shown a significant reduction in the risk of severe RSV disease.
For COVID-19, it is recommended that priority groups receive booster doses every six to 12 months.
Simple actions such as hand washing, respiratory etiquette, and staying home when experiencing fever or symptoms are key to limiting transmission.
