Vice wrote about research that assessed the effectiveness of popular "hacks" meant to improve the fit of KN95 and surgical masks. The researchers evaluated seven different "fit hacks," some of which ...

The CDC is expected to recommend that all Americans wear masks in public. Here's how to make the most effective mask possible, using stuff you have lying around the house. Why masks aren’t better at ...

As health officials scramble to minimize spread of the highly contagious Omicron variant, many experts have recommended that people switch from cloth or surgical masks to more-protective N95 and KN95 ...

A study involving more than 340,000 people in Bangladesh offers some of the strongest real-world evidence yet that mask use can help communities slow the spread of Covid-19. The research, conducted ...