The impact of matching vaccine strains and post-SARS public health efforts on reducing influenza-associated mortality among the elderly.

PLoS One · 2010 · PMC2892467 · PMID 20592764

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showed a trendno p-value reported

In other words, post-SARS years showed a trend toward reduced influenza-associated mortality while vaccines were mismatched.

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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.