pertussis造句

1、California is now in the middle of the worst outbreak of pertussis in half a century.
加州目前正处于半个世纪以来最严重的百日咳爆发中。

2、Fermental cultivation of Bordetella pertussis immunogens
百日咳杆菌有效免疫原的发酵培养

3、However, pertussis is still a relatively uncommon cause of chronic cough.
然而，百日咳还是相对不常见的慢性咳嗽的原因。