Bacterial meningitis (BM) is a serious, life-threatening infectious disease of the central nervous system that often occurs in young children. The most common severe to moderate sequelae following BM are sensorineural hearing loss, neuromotor disabilities and mental retardation, while subtle sequelae include academic and behavioral disabilities. | Study protocol: The Dutch 20|30 Postmeningitis study: A cross-sectional follow-up of two historical childhood bacterial meningitis cohorts on long-term outcomes