Officials say it is the key to stopping the surge, but not everyone is listening. Certainly awkward for me to approach a citizen thats my customer and tell them that they need to cover their face. Tonight a new effort to crack down on people not wearing masks. There are new numbers out tonight that illustrate why covering your face can put a big dent in the spread of covid19. State Health Leaders now say wearing a mask 80 of the time could reduce transmission by as much as 60 . This as late tonight another bay area county puts some teeth into its mask mandate. Nbc bay areas cheryl hurd explains. Reporter the emergency order making it mandatory to wear face coverings in Contra Costa County is in effect not everyone is happy in danville. I dont understand that. You know what i mean . Where youre forced to wear a mask. I just had a kidney tooken out. I got bad lungs, this and that. I cant wear a mask, but it is what it is. Reporter according to the state, wearing a mask is essential if yo