Post COVID-19 condition after SARS-CoV-2 infections during the omicron surge compared with the delta, alpha, and wild-type periods in Stockholm, Sweden

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Abstract

Little is known about the post–COVID-19 condition (PCC) after infections with different SARS-CoV-2 variants. We investigated the risk of PCC diagnosis after primary omicron infections as compared with preceding variants in population-based cohorts in Stockholm, Sweden. When compared with omicron (n = 215 279, 0.2% receiving a PCC diagnosis), the adjusted hazard ratio (95% CI) was 3.26 (2.80–3.80) for delta (n = 52 182, 0.5% PCC diagnosis), 5.33 (4.73–5.99) for alpha (n = 97 978, 1.0% PCC diagnosis), and 6.31 (5.64–7.06) for the wild type (n = 107 920, 1.3% PCC diagnosis). These findings were consistent across all subgroup analyses except among those treated in the intensive care unit.

Keywords

SARS-CoV-2, post–COVID-19 condition, Long COVID, COVID-19

Citation

Pontus Hedberg, Pontus Nauclér, Post–COVID-19 Condition After SARS-CoV-2 Infections During the Omicron Surge vs the Delta, Alpha, and Wild Type Periods in Stockholm, Sweden, The Journal of Infectious Diseases, Volume 229, Issue 1, 15 January 2024, Pages 133–136, https://doi.org/10.1093/infdis/jiad382