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The age paradox in post-infectious sequelae: physiological reserve outweighs chronological age in Long COVID susceptibility

2026-02-26 public and global health Title + abstract only
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BackgroundOlder age is widely considered a risk factor for post-acute sequelae of SARS-CoV-2 infection (PASC), typically attributed to immunosenescence and inflammaging. However, whether this association reflects intrinsic biological ageing or accumulated comorbidity burden remains unclear, with implications for clinical risk stratification. MethodsWe conducted a retrospective cohort study using the Precision PASC Research Cohort (P2RC) from Mass General Brigham, comprising 133,792 COVID-19 pat...

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