North America: Influenza activity remained at low levels, and SARS-CoV-2 continued to rise. In Mexico, positivity for influenza with a predominance of influenza A (H3N2) viruses decreased, and positivity for SARS-CoV-2 continues to increase. In the United States, influenza activity decreased overall, with influenza A(H3N2) viruses predominating and SARS-CoV-2 activity increasing.
Caribbean: Influenza activity remained low, with influenza A(H3N2) predominating. SARI activity associated with SARS-CoV-2 activity increased in Haiti. RSV activity increased in the Dominican Republic.
Central America: Influenza and SARS-CoV-2 activity remained moderate and increasing. In Guatemala, ILI activity was at high levels and was associated with the co-circulation of influenza and SARS-CoV-2 in previous weeks. In Nicaragua and El Salvador, influenza A(H3N2) activity continues to increase.
Andean: Influenza activity remained low with A(H3N2) predominance, and SARS-CoV-2 activity decreased in most countries. In Bolivia, SARI activity remains high and is associated with the concurrent circulation of influenza, SARS-CoV-2, and RSV.
Brazil and Southern Cone: Influenza with predominance A(H3N2) continued to increase, and SARS-CoV-2 activity remained low but increased slightly. In Chile, ILI and SARI activity continued to increase associated with influenza and RSV activity. In Uruguay, SARI activity was at moderate levels associated with the predominance of SARS-CoV-2, and influenza A(H3N2) detections.