Face masks - COVID-19

Controversy on COVID-19 mask study spotlights messiness of science during a pandemic

Face masks made 'little to no difference' in preventing spread of COVID, scientific review finds

As COVID-19 protective supplies dwindle, U of T Engineering grad students are stitching face masks for Toronto - U of T Engineering News

COVID-19: 3 reasons why everyone should wear a face mask

COVID-19 Fabric Face Mask: Fabric Face Masks: Which Fabrics Should The 3 Layers Of Mask Be Made Of?

Most Effective Face Masks for COVID-19

Masks and Respirators

Community Use Of Face Masks And COVID-19: Evidence From A Natural Experiment Of State Mandates In The US

Hospital Makes Face Masks, Covid-19 Shields From Office Supplies - Bloomberg

Why hospitals in several states are reinstating mask requirements - ABC News

Wearing face coverings protected wearers from COVID-19 infection – large scale study

California COVID cases are increasing. What you need to know - CalMatters