San Diego February 25, 2021 4:47 pm What Herd Immunity Is and How We Get It There’s a lot of talk these days about how herd immunity will be our ticket out of the pandemic. Here’s what you need to know about what herd immunity is and how we get it. US & World Videos 3:37 SDPD shoots man with baby at Chollas View trolley station 3:31 Hillcrest businesses targeted in drive-by pellet gun attack 3:01 Woman confronts prowler in her Point Loma home 0:22 Police searching for trio accused of beating man outside downtown Tacos El Gordo 1:24 Evacuation orders issued again at energy storage facility