Requirement for adults to wear masks in schools has major impact on COVID-19 transmissions, study finds

Adults wearing masks may decrease COVID-19 outbreaks at schools and preschools, shows a new study published in Frontiers in Public Health. The study found that the first identified cases (index cases) in schools were predominantly children, but outbreak events were more severe when an adult was the index case. Wearing a mask significantly lowered secondary cases. The researchers recommend obligatory mask wearing for adults working at schools and preschools to help prevent outbreaks.

source https://medicalxpress.com/news/2021-12-requirement-adults-masks-schools-major.html