Shedding a head is the fester sex meningitis that causes by meningitis diplococcus, any ages can come on, come on with wintry spring more, the incidence of a disease after November begins to rise, 2 - reached a peak in April.

• 流脑是由脑膜炎双球菌引起的化脓性脑膜炎，任何年龄都可发病，以冬春季发病较多，11月后发病率开始上升，2－4月达到高峰。