Global surveillance, research, and collaboration needed to improve understanding and management of long COVID – The Lancet

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.

Source: Global surveillance, research, and collaboration needed to improve understanding and management of long COVID – The Lancet