摘要
流行病学和微生物学 细菌性脑膜炎的年发病率约为2／10万～3／10万，以婴幼儿和青少年发病率为高。在英国，b型流感嗜血杆菌（Hib）免疫接种项目和近来C组脑膜炎球菌疫苗的应用，使这两种细菌性脑膜炎的病例数明显下降，且使细菌性脑膜炎总发病率也显著下降。
Bacterial meningitis Epidemiology and microbiology： the overall annual incidence of bacterial meningitis is about 2-3/100000, with peaks of incidence in infants and adolescents. Integration of vaccines into the UK vaccination programme against Haemophilus influenzae type b（Hib）and more recently against group C meningococccus has led to a markes decline in cases of Hib and Group C meningococcal meningitis and has significantly reduced the overall in cidence of bacterial meningitis.
