疫苗能够阻止病毒在人体内的繁殖，不但能有效减轻感染者的症状，也能阻止病毒进一步传播。

来源: cowpi 于 2023-12-18 12:20:28 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.