this is truly interesting, but giving

Smart · 2021-05-15 08:57:25Z

this is truly interesting, but giving简介

来源: Smart 于 2021-05-15 08:57:25 [档案] [旧帖] [给我悄悄话] 阅读数 : 0 (100 bytes)

回答: Propose nasal immunity for COVID-19 by Dr. Yan Jun Xu 由 tantema 于 2021-05-15 07:57:47

vaccine through nasal is not novel; it has been used for various vaccines, including flu.

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