[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

甲肝疫苗分减毒活疫苗(单剂即完成,成本低)和灭活疫苗(需2剂,间隔6-12个月)两种。出国前时间紧张或需长期高强度保护者优选灭活疫苗全程接种,其抗体持续时间可达20年以上;国内常规免疫可用单剂减毒活疫苗

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