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Regional Update, Influenza. Epidemiological Weeks 50-51 (29 December 2022)
Washington, D.C.; PAHO; 2023-01-06.
in English, Spanish | PAHO-IRIS | ID: phr-56989
Responsible library: US1.1
ABSTRACT
[WEEKLY SUMMARY]. North America Influenza activity was moderate, although increasing in the subregion, with the predominance of influenza A(H3N2) and co-circulation of A(H1N1)pdm09 and B/Victoria. The SARS-CoV-2 activity has increased, while RSV activity continued to decline. In Canada, influenza activity has decreased; most surveillance indicators were above expected levels. In Mexico, influenza activity continued above expected levels, with SARI cases at low-intensity levels. Influenza activity seems to have reached a plateau at moderate-intensity levels in the United States, with influenza-associated cumulative hospitalization rates higher than the highest cumulative in-season hospitalization rate observed in week 51 (2010-21). Elevated RSV activity continued but with a decreasing trend. Caribbean Influenza activity was moderate across the subregion with A(H3N2) virus predominance and B/Victoria co-circulation. SARS-CoV-2 activity remained low overall. Belize and Haiti have shown increased influenza activity at low-intensity levels, while Guadeloupe and Martinique registered increased RSV activity. Central America Influenza activity was at moderate levels, with the predominance of influenza A(H3N2) and the co-circulation of influenza B/Vitoria (where lineage was determined). Increased influenza activity was reported in Guatemala. SARS-CoV-2 percent positivity increased in the subregion overall, while RSV decreased. Andean Influenza activity was low, with the predominance of influenza A(H3N2) and co-circulation of influenza A(H1N1)pdm09 and B/Victoria. Bolivia and Ecuador reported increased influenza B/Victoria and A(H3N2) detections, with increased SARI activity at moderate-intensity levels in both countries. In addition, SARS-CoV-2 percent positivity continued elevated in Colombia, Ecuador, and Peru. In the subregion, RSV activity was low overall. Brazil and Southern Cone Influenza activity was moderate, with influenza A(H3N2) predominance and co-circulation of influenza A(H1N1)pdm09 and influenza B/Victoria. Argentina reported decreasing influenza activity with influenza B (lineage undetermined) predominance. In Chile, influenza A(H3N2) predominated, showing a decreasing trend. The SARS-CoV-2 activity was elevated across the subregion but with a decreasing trend. Increased RSV activity continued to be reported in Brazil and Chile.
Subject(s)
Full text: Available Collection: Databases of international organizations Health context: SDG3 - Target 3.8 Achieve universal access to health / SDG3 - Health and Well-Being / SDG3 - Target 3.3 End transmission of communicable diseases Health problem: Governance Arrangements / Target 3.8 Achieve universal access to health / Target 3.3: End transmission of communicable diseases / Pneumonia Database: PAHO-IRIS Main subject: Americas / Caribbean Region / Influenza, Human / International Health Regulations / Betacoronavirus / SARS-CoV-2 / COVID-19 Language: English / Spanish Year: 2023
Full text: Available Collection: Databases of international organizations Health context: SDG3 - Target 3.8 Achieve universal access to health / SDG3 - Health and Well-Being / SDG3 - Target 3.3 End transmission of communicable diseases Health problem: Governance Arrangements / Target 3.8 Achieve universal access to health / Target 3.3: End transmission of communicable diseases / Pneumonia Database: PAHO-IRIS Main subject: Americas / Caribbean Region / Influenza, Human / International Health Regulations / Betacoronavirus / SARS-CoV-2 / COVID-19 Language: English / Spanish Year: 2023
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