https://blog.wongcw.com/2020/03/18/%e9%90%98%e5%8d%97%e5%b1%b1%ef%bc%9a%e4%b8%8d%e8%83%bd%e9%9d%a0%e9%9b%86%e9%ab%94%e5%85%8d%e7%96%ab%e5%86%a0%e7%8b%80%e7%97%85%e6%af%92%e6%9c%aa%e5%bf%85%e8%83%bd%e7%b5%82%e8%ba%ab%e5%85%8d%e7%96%ab/
鐘南山:不能靠集體免疫冠狀病毒未必能終身免疫