Infant mortality rates and pneumococcal vaccines: a time-series trend analysis in 194 countries, 1950-2020.

BMJ Glob Health · 2023 · PMC10407391 · PMID 37550006

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a decreasing trendno p-value reported

Conversely, all but one of the countries that never introduced PCVs in their national immunisation programme also reported a decreasing trend in IMR that strongly correlates with MMRs.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.