Effectiveness and impact of the 2-component acellular pertussis vaccine as a preschool booster in Finland - A register-based study.

PLOS Glob Public Health · 2026 · PMC13419238 · PMID 42525672

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a small trendno p-value reported

Effectiveness estimates in time intervals since vaccination were also high and showed only a small trend of waning ( Table 5 ).

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