The recent outbreak of measles at Disneyland has spurred a rash of competing newscast, blog posts, and social media responses. One question continues to be foremost--as quoted by CNN correspondent Mariano Castillo, "how bad is it?" Castillo reminds the reader: "to call the news surrounding vaccinations a "debate" is misleading. The scientific and medical consensus is clear: Vaccinations are safe, and they work." The question is not about efficacy but about consequences; parents may have a variety of reasons for not vaccinating their children, sometimes on the grounds of safety or mistrust of the vaccine. However, as pointed...