Pertussis Maternal Immunization: Narrowing the Knowledge Gaps on the Duration of Transferred Protective Immunity and on Vaccination Frequency.

Front Immunol · 2017 · PMC5592197 · PMID 28932228

Europe PMC DOI

hedged sentence

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closest p

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boldest claim

The sentences

highly significantno p-value reported

Also highly significant was the finding that the disease incidence in infants less than 3 months of age had remained low despite a high persistence in those aged 1 year and older ( 18 ).

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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.