There is a small, but significant group of people who are choosing not to vaccinate their children. As result, we now have measles to worry about again. The disease surfaced in 2015 at Disneyland in California, affecting 131 victims, and spread to other U.S. states as well as to Mexico and Canada. Nearly all of this madness is the result of misunderstandings, rumors and outright lies that continue to circulate about various alleged medical conditions vaccines are said to produce, such as autism or ADHD (Attention Deficit Hyperactivity Disorder). This essay is a renewed call to arms to fight this dangerous situation.