Introduction: The Coronavirus-19 (COVID-19) pandemic puts a severe strain on all healthcare systems. This study aimed to describe the prevalence of mental health disorders among healthcare workers (HCWs) during the COVID-19 pandemic. Methods: An umbrella review of systematic reviews and meta-analyses concerning the prevalence of mental health disorders was conducted on PubMed Central/Medline, Cochrane Library, PROSPERO and Epistemonikos databases. The mental health disorders included anxiety, depression, burnout syndrome (BOS), sleep disorders, and post-traumatic stress disorders (PTSD) among HCWs during the COVID-19 pandemic. Results: A total of 14 studies met the full inclusion criteria and were included. Among them, there were 8 systematic reviews with meta-analysis, 3 systematic reviews, 1 rapid systematic review, 1 rapid systematic review with meta-analysis, and 1 umbrella review of meta-analyses. The prevalence of mental health disorders was high among HCWs. Anxiety and depression or depressive symptoms were included in 10 reviews, followed by sleep disorders (n = 5), BOS (n = 3), PTSD (n = 3), acute stress (n =3), distress (n =3), and psychotraumatic disorders (n =1) and fear (n =1). Discussion: The COVID-19 pandemic has had profound effects on the mental health states of HCWs, and resulted in high levels of anxiety, depression, sleep disorders, PTSD, and BOS. Therefore, psychological intervention for HCWs need to be commenced. This will help alleviate long-term distress, prevent chronic PTSD after COVID-19 and future outbreaks.
