CDC School Guidance Affirmed in Study Backing Masks, Airflow (1)

Mask use and improved ventilation were linked to a lower rate of Covid-19 cases in schools in a study that reinforced federal health guidance on how to keep the nation’s children safe.

Among Georgia elementary schools, the frequency of Covid cases at the end of last year was 37% lower in schools that required teachers and staff to use masks, according to a Friday report by the U.S. Centers for Disease Control and Prevention. The incidence of Covid cases was 39% lower in schools that enhanced ventilation.

Even as the CDC relaxed recommended precautions for fully vaccinated people, it has ...