Updated March 5: Appointments were available to get a COVID-19 vaccination on Thursday, March 4, at Senior Coastsiders for any San Mateo County residents 65 or older or those with canceled Sutter Health appointments. This is not an opportunity for those under 65 or who don't otherwise qualify by county guidelines. Senior Coastsiders Executive Director Sandra Winter said 200 Moderna doses were ready to go into arms, but just around 35 people have signed up early in the day. The walk-up site is for any county resident 65 or older who is in need of their first vaccine, and will run from 10 a.m. to 2 p.m. Thursday at 925 Main Street in Half Moon Bay.Â