“…Previous reports have shown a rate of infection between 1.5% and 22% after VA or VP shunt operations [13,16,25,35,36,38,40,53], a variation, which may partly be caused by the different designs of the investigations. The number of infections are either related to lvhe number of patients [22,25,31] or to the number of procedures, inclusive of revisions [16,40]. In some investigations no differentiation at all was given [35,47,53].…”