Pneumococcal serotype distribution in adults with invasive disease and in carrier children in Italy: Should we expect herd protection of adults through infants' vaccination?

Figures & data

Figure 1. Distribution of IPD cases (n = 221) according to age groups (A) and clinical presentation (B).

Figure 2. Serotype distribution in 212 adults with invasive pneumococcal disease. PCV7 serotypes accounted for 14.6%, all PCV13 serotypes 50.5%, non vaccine serotypes 49.5%.

Figure 3. Comparison between pneumococcal serotypes found in nasopharyngeal swabs obtained from healthy carrier children and adults with invasive pneumococcal disease expressed as percentages (A) and case/carrier ratio (B).