President Trump now says his administration is encouraging many Americans to wear face masks in public, though he stresses that the recommendation is optional and he concedes he won't be wearing one. 

Meanwhile Governor Gavin Newsom says face coverings can help but he won't be mandating their use.  

And in San Francisco the recommendation is to use some type of cloth face cover when running errands outside.

For more, KCBS's Patti Reising and Jeff Bell spoke with KCBS and Chronicle Insider Phil Matier.