Researchers at Duke tested how well different types of masks stopped the spread of saliva droplets coming from people’s mouths when they spoke. They found that N95 masks without valves work best followed by surgical masks. Cotton masks did stop the spread of some droplets from speech, while bandanas and neck fleeces like balaclavas did almost nothing. This study suggests that wearing an N95 mask or a surgical mask might best help slow the spread of the coronavirus.
That’s Gotta Hurt
The Injuries That Changed Sports Forever
Through the stories of a dozen athletes whose injuries and recovery advanced the field (including Joan Benoit, Michael Jordan, Brandi Chastain, and Tommy John), Dr. Geier explains how sports medicine makes sports safer for the pros, amateurs, student-athletes, and weekend warriors alike.Get the Book