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  • Influenza Situation Report: Regional Updates
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  • Influenza Situation Report: Regional Updates
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 1 (6 January 2023)

Actualización regional, Influenza y otros virus respiratorios. Semana Epidemiológica 1 (6 de enero del 2023)

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Date
2023
Author
Pan American Health Organization
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Abstract
[WEEKLY SUMMARY]. North America: Influenza activity was moderate and declining 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 decrease. In Canada, influenza activity has decreased; most surveillance indicators were within expected levels. In Mexico, influenza activity continued above expected levels; severity indicators were low. In the United States, influenza activity declined at low-intensity levels, with the percentage of deaths due to pneumonia, influenza, and COVID-19 above the average of previous seasons. RSV activity continued decreasing. Caribbean: Influenza activity was moderate in the subregion with A(H3N2) virus predominance, A(H1N1)pdm09, and B/Victoria co-circulated. Influenza percent positivity increased in Belize and Haiti. SARS-CoV-2 activity remained low overall; however, Belize, Haiti, and Jamaica reported increased COVID-19 activity. In addition, RSV activity was increased in Jamaica. Central America: Influenza activity was at moderate levels, with the predominance of influenza A(H3N2) and the co-circulation of influenza A(H1N1)pdm09 and B/Victoria (where lineage was determined). Influenza activity was elevated in Honduras, with the circulation of influenza B (lineage undetermined). SARS-CoV-2 percent positivity decreased in the subregion, with an increased percent positive in Costa Rica, Guatemala, and Honduras. In addition, Guatemala reported increased RSV activity. Andean: Influenza activity was low but increasing, with the predominance of influenza A(H3N2) and co-circulation of influenza A(H1N1)pdm09 and B/Victoria. Influenza activity was elevated in Bolivia and Ecuador, with increased SARI activity at low-intensity levels in both countries. In addition, SARS-CoV-2 percent positivity increased in Colombia, Ecuador, and Peru. In the subregion, RSV activity was low overall, with an increasing trend. Brazil and Southern Cone: Influenza activity decreased to low levels, with influenza A(H3N2) predominance and co-circulation of influenza A(H1N1)pdm09 and influenza B/Victoria. Argentina and Chile reported declining influenza activity. 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. 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 | Panamerican Health Organization (paho.org)
 
[RESUMEN SEMANAL]. América del Norte: en la subregión la actividad de la influenza estuvo moderada y decreciente, con predominio de influenza A(H3N2) y circulación concurrente de A(H1N1)pdm09 y B/Victoria. La actividad de SARS-CoV-2 ha aumentado, mientras que la actividad del VRS continuó disminuyendo. En Canadá, la actividad de la influenza ha disminuido; la mayoría de los indicadores de vigilancia estuvieron dentro de los niveles esperados. En México, la actividad de la influenza continuó por encima de los niveles esperados; los indicadores de gravedad estuvieron bajos. En los Estados Unidos, la actividad de la influenza disminuyó a niveles de baja intensidad, con el porcentaje de muertes por neumonía, influenza y la COVID-19 por encima del promedio de temporadas anteriores. La actividad del VRS continuó disminuyendo. Caribe: la actividad de la influenza fue moderada en la subregión con predominio del virus A(H3N2) y la circulación concurrente de A(H1N1)pdm09 y B/Victoria. El porcentaje de positividad de influenza aumentó en Belice y Haití. La actividad del SARS-CoV-2 se mantuvo baja en general; sin embargo, Belice, Haití y Jamaica informaron una mayor actividad de la COVID-19. Además, se incrementó la actividad del VRS en Jamaica. América Central: la actividad de la influenza estuvo en niveles moderados, con predominio de influenza A(H3N2) y la circulación concurrente de influenza A(H1N1)pdm09 y B/Victoria (en muestras con linaje determinado). La actividad de influenza estuvo elevada en Honduras, con circulación de influenza B (linaje indeterminado). El porcentaje de positividad del SARS-CoV-2 disminuyó en la subregión, con un aumento del porcentaje de positividad en Costa Rica, Guatemala y Honduras. Adicionalmente, Guatemala notificó un aumento de la actividad del VRS. Países Andinos: la actividad de la influenza estuvo baja pero con una tendencia creciente, con predominio de influenza A(H3N2) y circulación concurrente de influenza A(H1N1)pdm09 y B/Victoria. La actividad de la influenza estuvo elevada en Bolivia y Ecuador, con una actividad de IRAG aumentada en niveles de baja intensidad en ambos países. Además, el porcentaje de positividad del SARS-CoV-2 aumentó en Colombia, Ecuador y Perú. En la subregión, la actividad del VRS estuvo baja en general, con una tendencia creciente. Brasil y Cono Sur: la actividad de la influenza disminuyó a niveles bajos, con predominio de influenza A(H3N2) y circulación concurrente de influenza A(H1N1)pdm09 e influenza B/Victoria. Argentina y Chile reportaron una disminución de la actividad de la influenza. La actividad del SARS-CoV-2 estuvo elevada en toda la subregión, pero con una tendencia a la baja. Continuó la notificación de una actividad aumentada del VRS en Brasil y Chile. Influenza Aviar: el resumen sobre la situación epidemiológica de influenza aviar en la región, manejo de los casos y recomendaciones se encuentran disponibles en Alertas y actualizaciones epidemiológicas | OPS/OMS | Organización Panamericana de la Salud (paho.org)
 
Subject
Influenza, Human; COVID-19; SARS-CoV-2; Betacoronavirus; International Health Regulations; Americas; Caribbean Region; Gripe Humana; Reglamento Sanitario Internacional; Américas; Región del Caribe
URI
https://iris.paho.org/handle/10665.2/57033
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  • Influenza Situation Report: Regional Updates

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