What is the science behind face coverings?

Consistent use of a face mask or respirator in indoor public settings was associated with lower odds of a positive SARS-CoV-2 test result, according to a study published by the Centers for Disease Control and Prevention on February 4, 2022. Use of respirators with higher filtration capacity was associated with the most protection, compared with no mask use. Click here to read more

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1. Is there a difference between "cloth" and "fabric" face coverings?
2. What is a cloth face covering?
3. What is the science behind face coverings?
4. Can a business owner require masks upon entry?
5. When is a face covering not needed?
6. Can I wear a face shield instead of a mask?
7. If I have a medical exemption from wearing a mask I can work at my job without one, right?
8. Is anyone exempt from wearing a face covering?
9. Can I use an N95 respirator or surgical mask instead?