The masks are not meant to be a substitute for social distancing, Dr. Acton said in a press conference on Saturday, but they are meant to aid in preventing spread. She said the masks are about 80 percent effective in preventing spread.
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Masks should be made of multiple layers of tightly woven fabric, preferably cloth that does not let much light shine through. The Center for Disease Control offers instructions for two face coverings, one on how to sew a face covering and another on a no-sew face covering made from a T-shirt or a bandanna, rubber bands and coffee filters.
Dr. Acton recommends washing your hands after removing a face covering and says you should not touch your eyes, mouth or nose while removing it.
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