Effectiveness of the meningococcal vaccination programme for British Armed Forces recruits.

After several clusters of meningococcal disease arose among recruits to the British Armed Forces, vaccination against A + C meningococcal disease was introduced for military recruits in 1992. From 1993 onwards, no further clusters of group C infection were reported and incidence of meningococcal disease among trained soldiers fell, but there was no significant reduction in the overall incidence of meningococcal disease in recruits.