The U.S government now recommends that Americans wear masks or other face coverings when out in public. The intention is to slow the spread of COVID-19: Researchers have found that people may be able to transmit the virus for days without showing symptoms, and wearing a mask may reduce your exposure to the virus. What to do now? First, leave the N95 masks for healthcare providers; it’s recommended that the public use cloth or homemade masks instead. Second, follow this expert advice to avoid making the most common mistakes when wearing face masks.