P说(可能M也说了),现有疫苗需要改进才能预防新病毒Omicron。
现在99%是Delta,现有疫苗是针对原始病毒的,对Delta有作用吗?推加强针是为了预防Delta?
P说(可能M也说了),现有疫苗需要改进才能预防新病毒Omicron。
现在99%是Delta,现有疫苗是针对原始病毒的,对Delta有作用吗?推加强针是为了预防Delta?
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