Bubonic plague is the result of an insect bite in which the plague bacillus travels through the lymphatic system to the nearest lymph node where it forms a swelling.

• 腹股沟腺炎型鼠疫是跳蚤叮咬后，鼠疫杆菌沿着淋巴系统流到最近的淋巴结并在那里形成肿胀的结果。