elli123 发表评论于 2023-04-28 12:38:57
现在只有乙肝(b型肝炎的疫苗),甲肝(a型)一直没疫苗的.
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你这扯淡也太离谱了吧?
Hepatitis A vaccine is a vaccine that prevents hepatitis A. It is effective in around 95% of cases and lasts for at least twenty years and possibly a person's entire life.
现在只有乙肝(b型肝炎的疫苗),甲肝(a型)一直没疫苗的.
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你这扯淡也太离谱了吧?
Hepatitis A vaccine is a vaccine that prevents hepatitis A. It is effective in around 95% of cases and lasts for at least twenty years and possibly a person's entire life.