Pertussis is an acute infectious disease of the respiratory system,which is mainly caused by Bordetella pertussis and found in non-immunised children of developing countries.

• 百日咳是主要由百日咳杆菌引起的一种传染性强的急性呼吸系统疾病,主要见于发展中国家未接种相应疫苗的儿童。