Mask On

New research supports the shifting consensus about masks

On Friday, President Trump said that the CDC is encouraging people to wear masks in public, but that the measure is voluntary. The CDC has urged the administration to make this recommendation, reasoning that it would help prevent the wearer from unknowingly spreading disease.

The comprehensive guide to wearing masks published this week in Elemental outlined the two sides of the debate. Proponents of mask-wearing say that doing so would prevent people from inhaling or expelling virus particles in…