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Nov 4, 2023 · For people at high risk, the CDC suggests you wear a mask that provides you with the most protection possible. Wear a mask while in public indoor spaces when your area has a high number of people with COVID-19 in the hospital. Check with your doctor to talk about when to wear a mask at other times.
Jan 11, 2024 · Face masks provide protection against transmission of respiratory viruses. Additional steps to help the spread of respiratory viruses include hand washing, respiratory etiquette, and avoiding others when you are sick. Lisa Maragakis, M.D., M.P.H., an expert in infection prevention, answers questions about face masks.
Mar 1, 2024 · Generally, masks can help act as a filter to reduce the number of germs you breathe in or out. Their effectiveness can vary against different viruses, for example, based on the size of the virus. When worn by a person who has a virus, masks can reduce the chances they spread it to others.
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