Among the long list of issues debated throughout the Wuhan virus pandemic, the face mask arguably stands at the top. //

• Before putting on a mask, clean hands with alcohol-based hand rub or soap and water.
  Cover mouth and nose with mask and make sure there are no gaps between your face and the mask.
  Avoid touching the mask while using it; if you do, clean your hands with alcohol-based hand rub or soap and water.
  Replace the mask with a new one as soon as it is damp and do not re-use single-use masks.
  To remove the mask: remove it from behind (do not touch the front of mask); discard immediately in a closed bin; clean hands with alcohol-based hand rub or soap and water.
  Wear a mask if you are coughing or sneezing.
  Masks are effective only when used in combination with frequent hand-cleaning with alcohol-based hand rub or soap and water.
  If you wear a mask, then you must know how to use it and dispose of it properly.

If you are healthy, you only need to wear a mask if you are taking care of a person with COVID-19. //

Makes more sense than everybody wearing one. NJMA article:
We know that wearing a mask outside health care facilities offers little, if any, protection from infection.

In many cases, the desire for widespread masking is a reflexive reaction to anxiety over the pandemic.