建议年纪大的去打肺炎链球菌20价疫苗,不能防新冠但能减少肺细菌感染.免疫降低时也容易感染肺炎.

来源: 5181 于 2022-12-05 10:12:37 [旧帖] [给我悄悄话] 本文已被阅读：次

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