SARS-CoV-2 Antibody Seroprevalence in Wuhan, China, from 23 April to 24 May 2020.

mSphere · 2021 · PMC8546712 · PMID 33883260

Europe PMC DOI

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a clear trendno p-value reported

The antibody positivity rates showed a clear trend of increase according to patients’ ages and varied among different communities.

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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.