The incidence of cerebrospinal fluid shunt infections has fallen in re
cent years, but they still represent a major consumption of resources
in neurosurgery, especially paediatric neurosurgery. A variety of appr
oaches and a wide range of drugs are available for their treatment, bu
t despite the use of 'appropriate' antimicrobials the failure and rela
pse rates are sometimes high and repeat courses have to be given.