最近正好看了这篇文章:https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1001558 Conclusions We estimate that 2009 global pandemic respiratory mortality was ∼10-fold higher than the World Health Organization's laboratory-confirmed mortality count. Although the pandemic mortality estimate was similar in magnitude to that of seasonal influenza, a marked shift toward mortality among persons <65 y of age occurred, so that many more life-years were lost. The burden varied greatly among countries, corroborating early reports of far greater pandemic severity in the Americas than in Australia, New Zealand, and Europe. A collaborative network to collect and analyze mortality and hospitalization surveillance data is needed to rapidly establish the severity of future pandemics.
4. 15 加州发现第一例 (医生测流感病毒时发现是新病毒)
4.17 加州发现不相关的第二例
4.18 报给cdc ,who
4.21 cdc把这两个病例公布给大众
4.23 发现两个新病例4.24 上传基因序列
4.26 美国政府宣布为国际关注的突发公共卫生事件, cdc开始发药
4.27 who提高到四级,证实人传人
4.28 cdc发布测试包。要求感染学校停课一周
4.29 who五级
5月6月。 峰值。
6.11 who六级,最高疫情警告
6月。估计100万美国人感染。
7月。减弱。
8月 第二次传播扩散
9.30 疫苗发布
10月底。二次峰值。
12月。疫苗提供给公众。
第二年 1月。传播降低。
8月。who宣布疫情结束。
https://www.cdc.gov/flu/pandemic-resources/2009-pandemic-timeline.html
最近美国流感也死了一万人了,这样想来也够可怕的啊
老弱病残都算进去了,也就是万分之几的死亡率。
武汉这个湖北的死亡率 官方数字 算出来都是2.8%
可能你还不知道,地球上每天大概要死30万人。像中国,一天死7~8万是;美国每天也得死2万吧。对,说的是每天!可怕不可怕!