Knol, Mirjam Jvan der Ende, Arie2020-08-142020-08-142020-07-201474-44573270230410.1016/S1473-3099(20)30294-2http://hdl.handle.net/10029/624029eninfo:eu-repo/semantics/closedAccessContinuous surveillance of invasive pneumococcal disease is key.ArticleLancet Infect Dis 2021;21(1):13-4