Influenza Situation Report

The information presented in this update is based on data provided by Ministries of Health and National Influenza Centers of Member States to the Pan American Health Organization (PAHO) or from updates on the Member States' Ministry of Health web pages.

Regional Update Epidemiological Week 19, 2022​​​​​​

North America: Overall, influenza and SARS-CoV-2 activity remained at low levels. In Canada, influenza activity increased above the average of previous seasons for this period at low-intensity levels, and SARS-CoV-2 activity remained at low levels. In Mexico, influenza activity increased above the epidemic threshold to moderate intensity levels and ILI activity at average epidemic levels of previous seasons; SARS-CoV-2 activity decreased. In the United States, influenza activity decreased overall except in some states with influenza A(H3N2) viruses predominating.

Caribbean: Influenza activity remained at low levels with predominating influenza A(H3N2), and overall, SARS-CoV-2 activity increased with a low number of cases in the subregion. In Saint Lucia, SARS-CoV-2 activity and percent positivity increased.

Central America: Overall, influenza activity remained low, and SARS-CoV-2 activity slightly increased in the subregion. In El Salvador, influenza activity remained above-average levels at low-intensity levels with A(H3N2) predominance. In Costa Rica and Panama, SARS-CoV-2 activity and percent positivity increased compared to previous seasons for the same period.

Andean: Overall, influenza activity remained low with A(H3N2) predominance. SARS-CoV-2 activity continued to decline in most countries, except in Peru, where the influenza activity with the predominance of A(H3N2) continued elevated above the average seasonal levels. In Ecuador, RSV activity continued elevated with increasing SARI and pneumonia activity below the average levels

Brazil and Southern Cone: Overall, influenza with the predominance of A(H3N2) and SARS-CoV-2 activity decreased. In Brazil and Argentina, SARS-CoV-2 activity increased slightly compared to the previous week. In Argentina, Chile, and Uruguay, influenza A(H3N2) activity continued elevated, while RSV activity continued elevated in Chile and Brazil.



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