we'll begin in the bay area where two more counties have been added to the less restrictive red tier. for the first time since thanksgiving, san francisco and santa clara counties are back in the red tier, joining marin and san mateo, which moved out of purple last week. but as you can see, contra costa, alameda, sonoma, alameda and solano counties remain in the more restrictive purple tier. >> the red tier mean restaurants will be able to reopen for indoor dining at 25% capacity. bars and breweries must remain closed. >> it also allows movie theater, museums, indoor zoos and aquariums to reopen at 25% capacity, keep in mind. retail and indoor malls will also be allowed to increase capacity to 50%. indoor gyms can open at 10% capacity. >> while san francisco has been in the red before, this time there is more optimism that we may finally start seeing some things return to normal. abc7 news reporter lyanne melendez is in the newsroom. and lyanne, i assume a lot of that optimism has to do with the vaccine? >> oh, a lot.