This is the big day. As dawn broke Tuesday, California officially reopened…and poof, physical distancing, capacity restrictions and color-coded tier charts we’ve become begrudgingly used to just disappeared. As of now, state law no longer requires vaccinated people to wear masks in indoor public settings.  But not everyone is stoked.

Herd immunity is the unicorn we’re all chasing as a way out of pandemic life, but reaching that point is easier said than done. San Francisco, however, looks like it’s on track to get there faster than any other major metropolitan California city. What constitutes herd immunity varies widely depending