There are quite a number of asymptomatically infected in the population, and they may discharge hepatitis A virus at certain times and under certain conditions.

 
  • 无症状感染者在人群中为数不少,在一定时期和条件下也可排出甲肝病毒,但此时带毒者常活动自如,不易管理,因而作为传染源有重要意义。
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