美国CDC上说的

来源: 于 2020-02-23 07:00:54 [旧帖] [给我悄悄话] 本文已被阅读：次

https://www.cdc.gov/flu/pandemic-resources/2009-h1n1-pandemic.html

However, (H1N1)pdm09 virus continues to circulate as a seasonal flu virus, and cause illness, hospitalization, and deaths worldwide every year.