Monitoring and Evaluation Action Guide: Wearing Masks as a COVID-19 Community Mitigation Strategy Mask Wearing Evaluation [open pdf - 376KB]
From the Document: "This action guide is developed to help evaluators, program implementers, and policy makers monitor and evaluate wearing masks as a community mitigation strategy. This is not meant for healthcare settings. This guide provides practical considerations and examples of evaluation questions, indicators, and data sources."
U.S. Centers for Disease Control and Prevention: https://www.cdc.gov/