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Influenza, SARS-CoV-2, RSV and other respiratory viruses Documents

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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 3 (30 January 2026)
Technical reports
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 2 (23 January 2026)
Technical reports
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 1 (16 January 2026)
Technical reports
Cover Technical guidance for an integrated approach to routine surveillance of respiratory viruses in the Americas (Interim version)
Technical guidance for an integrated approach to routine surveillance of respiratory viruses in the Americas (Interim version)
Technical and scientific products
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 53 (9 January 2026)
Technical reports
Epidemiological Alert Simultaneous circulation of seasonal influenza and respiratory syncytial virus - 9 January 2026
Epidemiological alerts and updates
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 52 (2 January 2026)
Technical reports
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 51 (26 December 2025)
Technical reports
Recommendations for the Early Detection of Human Cases of Avian Influenza A(H5N1) Cover
Recommendations for the Early Detection of Human Cases of Avian Influenza A(H5N1)
Technical and scientific products
Briefing Note: Prevention and control measures to prevent the transmission of seasonal influenza. 19 December 2025
Epidemiological alerts and updates
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 49 (12 December 2025)
Technical reports
Briefing note - Influenza A(H3N2) subclade K (J.2.4.1), considerations for the Americas Region - 11 December 2025
Epidemiological alerts and updates
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 48 (5 December 2025)
Technical reports
Epidemiological Alert Seasonal Influenza in the Americas Region: End of the 2025 Season in the Southern Hemisphere Start of the 2025-26 Season in the Northern Hemisphere - 4 December 2025
Epidemiological alerts and updates
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 47 (28 November 2025)
Technical reports
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 46 (21 November 2025)
Technical reports
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 45 (14 November 2025)
Technical reports
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 44 (7 November 2025)
Technical reports
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Regional Update, Influenza and Other Respiratory Viruses. Epidemiological Week 43 (1 November 2025)
Technical reports
Interpretation of real-time RT-PCR results
Technical and scientific products
Infographic - Influenza Virus Change
Infographics