The scale of chronic ill health and disability after COVID-19 has been described as the next big global health challenge.1 Prevalence estimates of a post-COVID-19 condition, long COVID, or post-acute sequelae of SARS-CoV-2 vary according to definition, methodology, and population. A recent systematic review reported persistent symptoms at 3–6 months in a median of 57% (range 13–92) of hospitalised patients (six studies) and 26% (2–62) of non-hospitalised patients (ten studies).2 This study and other reviews identified few studies from low-income settings,3 but with more than 245 million SARS-CoV-2 infections reported globally,4 millions of people are likely to already be experiencing long-term illness. While COVID-19 vaccines have reduced the risk of severe COVID-19 and death, continued high rates of SARS-CoV-2 infection will lead to further disability, having a huge impact on individuals, their families, health services, and society.
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Source: Ward H, Flower B, Garcia PJ, Ong SWX, Altmann DM, Delaney B, Smith N, Elliott P, Cooke G. Global surveillance, research, and collaboration needed to improve understanding and management of long COVID. Lancet. 2021 Dec 4;398(10316):2057-2059. doi: 10.1016/S0140-6736(21)02444-2. Epub 2021 Nov 10. PMID: 34774190; PMCID: PMC8580495. (Full text)