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2025年12月16日時点の情報

Epidemiological Update: Pertussis (Whooping Cough) in the Americas Region – 8 December 2025|8 Dec 2025 |Pan American Health Organization
Organization (WHO) in 2024, representing a 5.8-fold increase compared with the number of cases reported in 2023 (n= 167,407 cases). The highest proportion of cases was recorded in the WHO Regions of the Western Pacific (n= 591,193 cases) and Europe (n= 296,543 cases).

Southern Africa tackles climate-driven disease threats through pandemic fund grant|09 December 2025|African Region
Eight Southern African countries – Botswana, Lesotho, Madagascar, Malawi, Mozambique, Namibia, South Africa, and Zimbabwe are joining forces to Prevent, detect and respond to disease outbreaks before they spread to communities.

Africa invests in stronger vaccine evidence: regional training workshop builds skill…|04 December 2025|African Region
As outbreaks of infectious diseases continue to challenge health systems across the WHO African region, public health experts from more than a dozen African countries have convened in Brazzaville for an intensive training workshop aimed at strengthening vaccine effectiveness (VE) research in the Region.

Briefing note – Influenza A(H3N2) subclade K (J.2.4.1), considerations for the Americas Region – 11 December 2025|11 Dec 2025 |Pan American Health Organization
The Pan American Health Organization / World Health Organization (PAHO/WHO) is issuing this Briefing Note to inform Member States about the influenza A(H3N2) situation related to subclade K in various regions of the world and to reiterate the recommendations made in the PAHO/WHO Epidemiological Alert on seasonal influenza in the Americas Region published 4 December 2025.

Seasonal influenza|10 December 2025|Global situation
In many northern hemisphere countries, acute respiratory infection levels increase at this time of year. These increases are typically caused by seasonal epidemics of respiratory pathogens such as influenza, respiratory syncytial virus (RSV) and other common respiratory viruses. The exact timing of the onset, the duration, magnitude and the severity of each epidemic might vary by location, influenced by multiple factors such as type of circulating viruses (including influenza and other respiratory pathogens), relative population immunity and environmental conditions.