流感疫苗可以预防甲流和乙流吗
流感疫苗能有效预防甲型和乙型流感病毒,但需每年接种以匹配变异毒株。预防效果取决于疫苗与流行毒株的匹配度,通常可降低40%-60%??...
2025-05-04 18:52:08流感疫苗能预防甲流乙流吗
流感疫苗能有效预防甲型H1N1、H3N2和乙型流感病毒株感染,保护率可达60%-90%。接种疫苗是降低重症风险的关键手段,需每年更新接种。1. ...
2025-05-01 17:24:48
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