text: Mental health among healthcare workers and other vulnerable groups during the COVID 19 pandemic and other coronavirus outbreaks A rapid systematic review Although most countries and healthcare systems worldwide have been affected by the COVID 19 pandemic some groups of the population may be more vulnerable to detrimental effects of the pandemic on mental health than others The aim of this systematic review was to synthesise evidence currently available from systematic reviews on the impact of COVID 19 and other coronavirus outbreaks on mental health for groups of the population thought to be at increased risk of detrimental mental health impacts We conducted a systematic review of reviews on adults and children residing in a country affected by a coronavirus outbreak and belonging to a group considered to be at risk of experiencing mental health inequalities Data were collected on symptoms or diagnoses of any mental health condition quality of life suicide or attempted suicide The protocol for this systematic review was registered in the online PROSPERO database prior to commencing the review https www crd york ac uk prospero display_record php RecordID 194264 We included 25 systematic reviews Most reviews included primary studies of hospital workers from multiple countries Reviews reported variable estimates for the burden of symptoms of mental health problems among acute healthcare workers COVID 19 patients with physical comorbidities and children and adolescents No evaluations of interventions were identified Risk and protective factors mostly for healthcare workers showed the importance of personal factors the work environment and social networks for mental health This review of reviews based on primary studies conducted in the early months of the COVID 19 pandemic shows a lack of evidence on mental health interventions and mental health impacts on vulnerable groups in the population 