Source: Health Protection Agency, Centre for Infections
NB: The above graph is based on week of isolation, therefore numbers for most recent weeks may not be complete. Numbers of reports of serotyped cases shown in the graph are not adjusted to account for any change that may have occurred over time and between agegroups in the proportion of all IPD cases that are serotyped. The 7-valent conjugate vaccine was introduced into the childhood immunisation schedule on the 4 September 2006, which corresponds with week 36 above
Last reviewed: 9 February 2012