Weekly updates, Influenza Epidemiological Week 17 (5 May 2023)

Download from the PAHO Digital Library	North America: Influenza activity has shown a slight increase while remaining at low levels. During the last 4 EW, the predominant influenza viruses have been B (Victoria), with less circulation of influenza A (mostly A(H1N1)pdm09). Respiratory Syncytial Virus (RSV) activity has shown a pronounced rise with medium levels of circulation. SARS-CoV-2 activity has remained high. Caribbean: Influenza activity has shown a rise with medium levels of activity. During the last 4 EW, the predominant influenza viruses have been B (Victoria), with less circulation of influenza A (mostly A(H1N1)pdm09). RSV activity has been low. SARS-CoV-2 activity has shown an increase and is currently at medium levels of circulation. Central America: Influenza activity has shown medium levels of circulation, remaining stable. During the last 4 EW, the predominant influenza viruses have been A, mostly A(H1N1)pdm09, with less circulation of influenza B (Victoria). RSV activity has been low. SARS-CoV-2 activity has remained low and has decreased in recent weeks. Andean: Influenza activity has shown an increase in the number of detections while remaining stable at low levels of positivity. During the last 4 EW, the predominant influenza viruses have been A, mostly A(H1N1)pdm09, with less circulation of influenza B (Victoria). RSV activity has shown an increase and is currently at medium levels of circulation. SARS-CoV-2 activity has shown an increase and is currently at medium levels of circulation. Brazil and Southern Cone: Influenza activity has shown a pronounced increase and is currently at medium levels of circulation. During the last 4 EW, the predominant influenza viruses have been A, mostly A(H1N1)pdm09, with less circulation of influenza B (Victoria). RSV activity has shown a pronounced rise and is currently at medium levels of circulation. SARS-CoV-2 activity has remained low. Global: Available at Global Influenza Programme (who.int) Avian Influenza: A summary of the avian influenza situation in the region, case management and recommendations are available at Epidemiological alerts and updates \| PAHO/WHO \| Pan American Health Organization (paho.org)