Pneumonia hospitalizations of children aged <2 years in Poland before (2013-2016) and after (2017-2018) universal mass vaccination with 10-valent pneumococcal non-typeable <i>Haemophilus influenzae</i> protein D conjugate vaccine.

Hum Vaccin Immunother · 2022 · PMC9746359 · PMID 36239615

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a clear trendno p-value reported

As shown in Figure 2 , the incidence rate did not exhibit a clear trend over time.

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