Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 49 (13 December 2024)

Regional Situation: Influenza-Like Illness (ILI) and Severe Acute Respiratory Infection (SARI) activity has shown a general decline in most subregions in recent weeks, except in North America, where an increase in ILI and SARI cases has been reported. SARS-CoV-2 activity continues to decrease, reaching low levels in North America, while showing an upward trend in Brazil and the Southern Cone. Influenza activity has slightly increased in some countries of the Andean subregion, the Southern Cone, North America, and the Caribbean. Respiratory Syncytial Virus (RSV) activity remains high in some Central American countries, with an upward trend and elevated activity in North America and several countries and territories in the Caribbean.