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.
无症状感染者人群中数不,定时期和条件下也可排出甲肝病毒,此时带毒者常活动自如,不易管理,因传染源有重要意义。
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.
无症状感染者人群中数不,定时期和条件下也可排出甲肝病毒,此时带毒者常活动自如,不易管理,因传染源有重要意义。
声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。