The number of IPD cases in children 0–11 months of age with identified serotype was 62 ( S3 Table ), with the most frequent serotype 19F (showing a decreasing trend in the last postvaccination period).
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Impact of pneumococcal conjugate vaccine on invasive pneumococcal disease in children under 5 years of age in the Czech Republic.
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The sentences
The second most frequent was serotype 19A (causing 19 cases) which showed an increasing trend in the post-vaccination period.