Carl Heneghan and Tom Jefferson

Do mask mandates work?

A look at the evidence

(Photo: iStock)

This week there was an update to a Cochrane review, which studies the way physical interventions can interrupt or reduce the spread of respiratory viruses. The review, which Tom Jefferson is the lead author of, looks at evidence from 78 randomised trials with over 610,000 participants. In other words, this review is exactly the sort of higher-quality evidence you want when making healthcare decisions.

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Written by
Carl Heneghan and Tom Jefferson
Carl Heneghan is professor of evidence-based medicine at the University of Oxford. Dr Tom Jefferson is a Clinical epidemiologist and Senior Associate Tutor at the University of Oxford.

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