Practices that show evidence of effectiveness in improving public health outcomes in a specific real-life setting, as indicated by achievement of aims consistent with the objectives of the activities, and are suitable for adaptation by other communities.

Mask Use and Ventilation Improvements to Reduce COVID-19 Incidence in Elementary Schools — Georgia, November 16–December 11, 2020

Gettings, J., Czarnik, M., Morris, E., Haller, E., Thompson-Paul, A. M., Rasberry, C., Lanzieri, T. M., Smith-Grant, J., Aholou, T. M., Thomas, E., Drenzek, C., MacKellar, D

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Case Study

Outreach/ Education/ Communications
Neighborhood and Built Environment
Tools Included
Outside U.S.

Mitigation and Prevention

This article summarizes prevention strategies implemented in Georgia schools, focusing on ventilation improvements and mandatory masking as strategies to reduce COVID-19. Before vaccination availability, incidence of COVID-19 was 37% lower among schools that required staff to mask.

Resource Details

Outcomes of Interest

Reduction of Health Disparities

Priority Population(s)

Setting(s) of Implementation


Geographic Area of Implementation

Implementation Period