Center for Infectious Disease Research and Policy:

Worldwide, 49% of COVID-19 survivors reported persistent symptoms 4 months after diagnosis, estimates a meta-analysis of 31 studies published late last week in The Journal of Infectious Diseases.

University of Michigan researchers, who conducted a systematic review on Jul 5, 2021, also found the prevalence of long COVID at 1 month at 37%, while it was 25% at 2 months and 32% at 3 months. Fifty studies were identified in the review, and 41 were included in a quantitative synthesis, and 31 reporting overall prevalence were meta-analyzed.

The 50 studies included a total of 1,680,003 COVID-19 patients, including those who were hospitalized (67,161 patients from 22 studies), nonhospitalized (4,165 from 5 studies), and any COVID-19 patients, regardless of hospitalization status (1,608,677 from 23 studies). [Continue reading…]