Face masks are an essential part of a layered strategy to keep customers safe and reduce transmission of COVID-19 throughout air travel, according to a new technical bulletin published this week by faculty at Harvard’s T.H. Chan School of Public Health. The study’s conclusions reference recent research that suggests the universal use of masks in…

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Face masks are an essential part of a layered strategy to keep customers safe and reduce transmission of COVID-19 throughout air travel, according to a new technical bulletin published this week by faculty at Harvard's T.
The study's conclusions reference recent research that suggests the universal use of masks in….
Trường Y tế Công cộng Chan.