Regional Update, Influenza. Epidemiological Week 21 (8 June 2022)

ABSTRACT

[WEEKLY SUMMARY]. North America Influenza and SARS-CoV-2 activity remained at low levels. In Canada, influenza activity with influenza A(H3N2) viruses predominating declined slightly and continued above the average of previous seasons for this time of year. In Mexico, influenza positivity with influenza A(H3N2) viruses predominating increased somewhat. In the United States, influenza activity decreased overall, with influenza A(H3N2) viruses predominating and SARS-CoV-2 deaths above expected levels. Caribbean Influenza activity remained at low levels with predominating influenza A(H3N2). SARS-CoV-2 activity increased slightly in Haiti and Saint Lucia. Central America Influenza and SARS-CoV-2 activity remained low. In Guatemala, influenza positivity with influenza A(H3N2) viruses predominating increased slightly. In Costa Rica and Nicaragua, SARS-CoV-2 activity and percent positivity increased compared to the previous week. Andean Influenza activity remained low with A(H3N2) predominance, and SARS-CoV-2 activity declined in most countries. However, RSV activity continued to increase in Bolivia, Colombia, and Ecuador, and influenza activity increased in Peru. Brazil and Southern Cone Influenza with the predominance of A(H3N2) remained low but continued to increase, and SARS-CoV-2 activity decreased. In Chile and Uruguay, influenza activity continues to increase, and in Paraguay, SARI activity was at moderate levels associated with the co-circulation of influenza SARS-CoV-2 and RSV.