Figure 1.

Proportion of children with nasopharyngeal carriage of pneumococcal serotypes, by 7PCV and 23PPV serotype group and year. Significant reductions in 6B and 19A from 2003 to 2005. Significant increases in 20,9N,23B, 34,10F from 2003 to 2005.

Leach et al. BMC Infectious Diseases 2009 9:121   doi:10.1186/1471-2334-9-121
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