We read with interest the systematic review and meta-analysis by Chaabna et al. aiming at synthesizing available evidence on effectiveness of facemasks to prevent transmission respiratory infections in community setting (Chaabna al., 2020Chaabna K. Doraiswamy S. Mamtani R. Cheema Facemask use settings infection transmission: a rapid meta-analysis.Int J Infect Dis. 2020; (S1201-9712(20)32150-0)h...