Can I use a ‘face shield’ instead of a mask?
No. Health authorities do not recommend clear plastic shields as a substitute for face masks due to a lack of research on whether they prevent an infected person from spreading the droplets that carry the coronavirus.
However, those who want additional protection can use it in addition to the mask.
Face shields have the added benefit of protecting the eyes and preventing face touching by acting as a physical barrier, said Christopher Sulmonte, project manager for the biocontainment unit at Johns Hopkins Hospital.
Research available so far indicates that the best face shields to prevent the spread of the virus are those that wear a hood or are taped to both sides and below the face, according to the US Centers for Disease Control and Prevention. . This is because they leave less room for droplets that are produced by coughing, sneezing, or talking to escape.
If you use a reusable face shield in addition to your mask, the CDC reminds you that it is important to clean it after each one. In addition, it recommends washing your hands before and after placing it and avoiding touching your face when removing it.