COVID-19 and face masks: Your questions answered

A man wears a protective face mask decorated with a question mark in lower Manhattan during the outbreak of the coronavirus disease (COVID-19) in New York, U.S., May 22, 2020. Picture taken May 22, 2020. REUTERS/Mike Segar     TPX IMAGES OF THE DAY - RC2FUG97KKF0

Many people still have questions about the effectiveness of cloth masks. Image: REUTERS/Mike Segar

Catherine Clase
Physician, epidemiologist, associate professor, , McMaster University
Edouard Fu
MD/PhD Candidate in Clinical Epidemiology, Leiden University
Juan Jesus Carrero
Professor of Epidemiology, Karolinska Institute
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The WHO has advice on safe mask wearing. Image: WHO
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