Timothy Wiemken, a professor and infectious disease expert at St. Louis University, gives a brief explanation of why you should be wearing a mask, the proper way to use your mask and a few things you shouldn't do with a mask. Video by Colter Peterson, cpeterson@post-dispatch.com
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While wearing a mask properly may seem straight-forward and self-explanatory, experts say there are some common misconceptions and examples of misuse to be aware of.
Several Jefferson County businesses will be open Monday. Many others will wait.
Starting today, it will require all shoppers to wear masks or face coverings to reduce the chances of transmission of the virus.
