Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 41 (18 October 2024)

Regional Situation: Influenza-Like Illness (ILI) and Severe Acute Respiratory Infection (SARI) activity has shown a general downward trend in recent weeks, except in North America, where a slight increase in ILI cases has been observed. In this region, most positive cases have been associated with SARS-CoV-2, and to a lesser extent, influenza. In the Caribbean, Central America, the Andean region, and the Southern Cone, most positive cases have been linked to RSV, SARS-CoV-2, and influenza. SARS-CoV-2 activity remains high in North America and is increasing in Brazil and the Southern Cone. Influenza has shown a general decrease but continues to fluctuate in certain Caribbean and Andean subregion countries, as well as the Southern Cone. RSV activity has begun to decline in the Andean subregion and the Southern Cone after reaching epidemic levels in previous weeks but remains high in some Central American countries and is rising in some Caribbean nations.