Schools that required masks, improved ventilation reported fewer COVID-19 cases: CDC study

Schools in Georgia that required teachers and staff to wear masks and improved ventilation reported fewer COVID-19 cases, according to a Centers for Disease Control and Prevention (CDC) study released on Friday.

The research, conducted by the CDC and the Georgia Department of Public Health, determined that COVID-19 incidence was 37 percent lower in schools that mandated masks for teachers and staff. Schools that implemented at least one ventilation strategy saw a 39 percent reduction in coronavirus cases among students and staff.

The ventilation improvements ranged from dilution methods, which refer to running fans and keeping doors and windows open, to filtration with or without purification. Schools that used dilution methods saw 35 percent less COVID-19 incidence, and others that used dilution and filtration methods together saw 48 percent fewer cases.

https://thehill.com/policy/healthcare/554732-cdc-study-schools-that-required-masks-improved-ventilation-reported-less