One of the most common tropes used by antivaxers is to attack herd immunity as not being real. Herd immunity, or as its sometimes called, community immunity, is a name for a phenomenon in which in a population with high levels of immunity to a disease members susceptible to the disease are protected. Basically, because the vast majority of members of the population are immune to a disease, that disease can't gain a foothold in the population and lead to an outbreak or an epidemic. Basically, transmission from person to person is interrupted because any susceptible person who becomes infected…
Peter Hotez
Back in the day, I used to write posts with titles like When the outbreaks occur, they’ll start in California. I even wrote a followup, When the outbreaks occur, they’ll start in California, 2014 edition. The reason, of course, was that California was one of the epicenters of vaccine hesitancy as well as the home to some high profile antivaccine-sympathetic physicians, such as Dr. Bob Sears (who’s known for making Holocaust analogies about bills tightening school vaccine mandate requirements) and Dr. Jay Gordon (who’s known for continuing to claim, against all evidence, that vaccines cause…