虽然个人仍相信当初P/M疫苗对delta virus还是有效用D, 但从未信过疫苗有效性能达80%--90%以上,这高得有点。。哈哈。
虽然个人仍相信当初P/M疫苗对delta virus还是有效用D, 但从未信过疫苗有效性能达80%--90%以上,这高得有点。。哈哈。
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