Outstanding among the former are meningococcal meningitis, as well as meningitis caused by type B Haemophilus influenzae, meningitis caused by pneumococcus and tuberculosis meningitis.
前者中最为典型的是流行性脑膜炎，还有由Z型流感嗜血杆菌引起的脑膜炎，由肺炎球菌引起的脑膜炎和肺结核脑膜炎。