who上说“每年多达65万人死于与季节性流感有关的呼吸系统疾病”
https://www.who.int/mediacentre/news/releases/2017/seasonal-flu/zh/
看看下面美国的每年死于流感“between 12,000 – 61,000 deaths annually since 2010”.
https://www.cdc.gov/flu/about/burden/index.html
https://www.who.int/mediacentre/news/releases/2017/seasonal-flu/zh/
看看下面美国的每年死于流感“between 12,000 – 61,000 deaths annually since 2010”.
https://www.cdc.gov/flu/about/burden/index.html