Viruses can spread between people interacting in close proximity—for example, speaking, coughing, or sneezing—even if those people are not exhibiting symptoms.
The CDC recommends wearing face coverings in public settings where other social distancing measures are difficult to maintain (e.g., grocery stores and pharmacies) especially in areas of significant community-based transmission.
Face masks help to slow the spread of viruses, colds and flu. They help people who may be sick and do not know it from transmitting it to others. KN95 and disposable medical masks are a step above cloth masks and offer greater protection. They are an important part of your personal protection plan.