Pathogen profiles and co-detection characteristics of acute respiratory infections based on active surveillance in a large district of southern China.

Front Public Health · 2026 · PMC13395998 · PMID 42500019

Europe PMC DOI

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a decreasing trendp < 0.001actually significant

Significant differences were observed across age groups ( χ 2 = 419.172, p < 0.001), and the detection rate showed a decreasing trend with increasing age (Cochran-Armitage trend test: Z = −20.466, p < 0.001).

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showed a trendno p-value reported

Trends in pathogen detection rates by age Among the predominant viruses, the detection rates of both IAV and SARS-CoV-2 showed a trend of initially increasing and then decreasing with age, with cutoff ages of 7 years (APC 1 = 1.94, APC 2 = −0.10) and 26 years (APC 1 = 0.35, APC 2 = −0.13), respectively.

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