COVID-19

Does your homemade mask work? Here’s how you can test it

People from all around the world are making masks - but are they good enough to prevent transmission? Image: REUTERS/Francois Lenoir - RC2UPF98ZEJ8

Simon Kolstoe

Senior Lecturer in Evidence Based Healthcare and University Ethics Advisor, University of Portsmouth

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Experiment showing effectiveness of a medical-grade mask during a cough. Image: University of Edinburgh

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