ECDC Technical Guidance: Using Face Masks in the Community: First Update, Supplementary Material [open pdf - 634KB]
This supplementary material accompanies the 2021 technical report 'Using Face Masks in the Community: First Update; Effectiveness in Reducing Transmission of COVID-19 [coronavirus disease 2019]' by the European Centre for Disease Prevention and Control, located in the HSDL library here [https://www.hsdl.org/?abstract&did=850744]. Contents include tables, figures, review methods and results, quality and risk of bias assessment, and data extraction and analysis.
2021 European Centre for Disease Prevention and Control, Stockholm. Posted here with permission. Documents are for personal use only and not for commercial profit.
European Centre for Disease Prevention and Control: https://www.ecdc.europa.eu/