"Who fears or rejects vaccines, why do they do so, and how might we reach them to change their minds?" On Aetiology, Tara C. Smith answers these questions with a new paper written as a primer for those who want to stand up for vaccination. She says, "for many individuals on the vaccine-hesitant spectrum, it’s not only about misinformation, but also about group identity, previous experience with the health care field, and much more." The stakes of the vaccine debate are high. On Respectful Insolence, a mathematical model from Stanford shows that slight dips in uptake of the MMR vaccine would cause the number of measles cases in the U.S. to balloon. Meanwhile, in Europe, measles has killed dozens of people in the last year amidst thousands of cases that could have been prevented with a shot (or sufficient herd immunity). Orac blames Europe's problems squarely on Andrew Wakefield, and as for the bubbling tensions in the U.S., Orac says "antivaxers have figured out how to weaponize their views by coupling them to right wing rhetoric about 'freedom.'"