Effect of Face Mask on Lowering COVID‐19 Incidence in School Settings: A Systematic Review

ABSTRACT BACKGROUND The emergence of COVID‐19 resulted in a substantial loss of education because of global school closures. Face masks are a potential measure to restrain the COVID‐19 spread; therefore, this paper evaluated the effectiveness of face masks in reducing COVID‐19 incidence in school settings. METHODS A systematic review was conducted by searching the literature in the Cochrane COVID‐19 Study Register and the World Health Organization COVID‐19 global literature. Data were summarized in tabular forms, and the findings were presented as narrative synthesis. RESULTS A total of 15,709 records were retrieved. The screening and selection led to the inclusion of 12 observational and 2 quasi‐experimental studies. Nine studies were conducted in different states, counties, or districts of the United States, and the remaining 5 were reported from Germany, Finland, Spain, and the United Kingdom. The results of 10 out of 14 studies favored mask use in reducing school COVID‐19 incidence. Three studies found no link between mask use and COVID‐19 incidences, whereas 1 quasi‐experimental study noted a higher COVID‐19 incidence with mask use in students aged 6‐11 years than no use of mask among preschool children aged 3‐5 years. CONCLUSION Mask mandates may lessen the incidence of respiratory infectious diseases in school settings during a pandemic; more well‐designed studies are warranted to clarify further the evidence regarding mask use in school settings.