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.
无症状感者人群中为数,一定时期和条件下也可排出甲肝病毒,但时带毒者常活动自如,易管理,因而作为有重要意义。
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.
无症状感者人群中为数,一定时期和条件下也可排出甲肝病毒,但时带毒者常活动自如,易管理,因而作为有重要意义。
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