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WHO Rapid Risk Assessment - Chikungunya virus disease, Global v.1
Epidemiological alerts and updates
Briefing Note: Prevention and control measures to prevent the transmission of seasonal influenza. 19 December 2025
Epidemiological alerts and updates
Epidemiological Alert Hantavirus Pulmonary Syndrome in Americas Region - 19 December 2025
Epidemiological alerts and updates
Briefing note - Influenza A(H3N2) subclade K (J.2.4.1), considerations for the Americas Region - 11 December 2025
Epidemiological alerts and updates
Epidemiological Update: Pertussis (Whooping Cough) in the Americas Region - 8 December 2025
Epidemiological alerts and updates
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
Epidemiological Update Avian Influenza A(H5N1) in the Americas Region - 24 November 2025
Epidemiological alerts and updates
Epidemiological Update Avian Influenza A(H5N1) in the Americas Region - 15 October 2025
Epidemiological alerts and updates
Epidemiological Alert - Risk of Methanol Poisoning - 7 October 2025
Epidemiological alerts and updates
Epidemiological Update - Measles in the Americas Region - 19 September 2025
Epidemiological alerts and updates
Epidemiological Alert Chikungunya and Oropouche in the Americas Region - 28 August 2025
Epidemiological alerts and updates
Epidemiological Update Oropouche in the Region of the Americas - 13 August 2025
Epidemiological alerts and updates
Epidemiological Update - Measles in the Americas Region - 1 July 2025
Epidemiological alerts and updates
Epidemiological alert Increased pertussis (Whooping Cough) in the Americas Region - 31 May 2025
Epidemiological alerts and updates
Epidemiological Alert Yellow fever in the Americas Region - 31 May 2025
Epidemiological alerts and updates
Public Health Risk Assessment associated with the yellow fever situation in the Americas Region - 23 May 2025
Epidemiological alerts and updates
Epidemiological Update Avian Influenza A(H5N1) in the Americas Region - 15 May 2025
Epidemiological alerts and updates
Epidemiological Update Measles in the Americas Region - 2 May 2025
Epidemiological alerts and updates
Epidemiological Update yellow fever in the Americas Region - 24 April 2025
Epidemiological alerts and updates
Epidemiological alert - Seasonal influenza and other respiratory viruses in the Southern Hemisphere - 17 April 2025
Epidemiological alerts and updates
Epidemiological alert - Hand, foot, and mouth disease - 26 March 2025
Epidemiological alerts and updates