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European Centre for Disease Prevention and Control (ECDC) (2021)   C2

15 February 2021 The role of face masks in the control and prevention of COVID-19 remains an issue of debate. Prior to COVID-19, most studies assessing the effectiveness of face masks as a protective measure in the community came from studies on influenza, which provided little evidence to support their use.

COVID-19,  Coronavirus,  mask,  community,  Europe,