Rate of post Covid-19 symptoms: a systematic review and meta-analysis

Background. Covid-19 pandemic has led to global pandemic and substantial health, economic and social impact. The causative agent is coronavirus-2 (SARS-CoV-2) which belongs to the coronavirus family. The clinical picture of the infection ranges from a flu-like symptoms to severe pneumonia and mortality. Till January 2022, the cumulative number of cases exceeded 600 million worldwide with mortality rate of more than 6 million. Objective: to identify rate of total and individual presentations of post COVID-19 conditions. Methodology: the literature was reviewed till 1st July 2022, in six databases, we identified 5486 articles; after removal of duplicates and screening for eligible studies according to inclusion criteria, 17 studies were included for further qualitative and quantitative analysis. Results: the results showed high rate of post COVID-19 condition among patients. With prevalence rate of 5 to 10%, fatigue was the most reported symptom with prevalence of 34% among patients (RE: 0.33%, 95%CI: 0.32-0.35). The second highest common symptom was breathlessness with prevalence of 31% (RE: 0.31, 95%CI: 0.20-0.43). Mental health symptoms including anxiety and depression were also distinctly frequent. We also reported on different neurocognitive symptoms including attention and memory problems with rate of 16% (RE: 0.16, 95%CI: 0.11-0.22) and 19% (RE: 0.19, 95%CI: 0.14-0.26) respectively. Conclusion: it is apparent that a significant percentage of individuals with COVID-19 (45%) continue to grapple with a variety of persistent symptoms. Among these, fatigue and dyspnea emerge as highly prevalent issues consistently reported across various groups of patients. However, it is evident that a considerable portion of patients also contend with a diverse array of other lingering symptoms, displaying variability both in number and severity.