cman4434 wrote:如果新冠病毒真沒疫苗(恕刪)
Tioic wrote:最糟最糟就是全部的人...(恕刪)
Wei-Wei3 wrote:不過聽說得過後抗體只(恕刪)
Wei-Wei3 wrote:不過聽說得過後抗體只能維持一定時間而已不是永遠都有抗體耶,所以只要抗體一過就有可能二度感染,
cman4434 wrote:年年都得打??
cman4434 wrote:那不就跟打流感疫苗一(恕刪)
程伯老師 wrote:人類有幾次遇到瘟疫 (恕刪)