Face masks can help slow the spread of coronavirus disease 2019 (COVID-19). Learn about mask types, which masks to use and ...

This week marks five years since March 13, 2020, the day President Donald Trump declared a national state of emergency over the novel coronavirus outbreak. The White House issued the President's ...

Masks work. Especially respirator-style N95 masks. Amid an ongoing pandemic and outbreaks of influenza and RSV caused by airborne viruses, arguing over the virus-blocking power of masks remains one of ...

On March 28, 2020, as COVID-19 cases began to shut down public life in much of the United States, then-Surgeon General Jerome Adams issued an advisory on Twitter: The general public should not wear ...

In relation to the research reported here, there was no direct funding. Trish Greenhalgh has received funding for related work from Wellcome Trust and National Institute for Health and Care Research.