Help Slow the Spread of COVID-19
Organisations like the CDC recommends that people wear masks in public settings and when around people who don’t live in your household, especially when other social distancing measures are difficult to maintain.
Evidence for Effectiveness of Masks
Masks are recommended as a simple barrier to help prevent respiratory droplets from traveling into the air and onto other people when the person wearing the mask coughs, sneezes, talks, or raises their voice. This is called source control. This recommendation is based on what we know about the role respiratory droplets play in the spread of the virus that causes COVID-19, paired with emerging evidence from clinical and laboratory studies that shows masks reduce the spray of droplets when worn over the nose and mouth. COVID-19 spreads mainly among people who are in close contact with one another (within about 6 feet), so the use of masks is particularly important in settings where people are close to each other or where social distancing is difficult to maintain. CDC’s recommendations for masks will be updated as new scientific evidence becomes available.
Who Should Wear A Mask?
People who know or think they might have COVID-19
Caregivers of people with COVID-19
Those caring for someone who is sick with COVID-19 at home or in a non-healthcare setting may also wear a mask. However, the protective effects—how well the mask protects healthy people from breathing in the virus—are unknown. To prevent getting sick, caregivers should also continue to practice everyday preventive actions: avoid close contact as much as possible, clean hands often; avoid touching your eyes, nose, and mouth with unwashed hands; and frequently clean and disinfect surfaces.
Who Should Not Wear a Mask
Masks should not be worn by:
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WHO’s recommended fabric mask materials and composition
These materials are regularly updated based on new scientific findings as the epidemic evolves (Last updated 5 August 2020)