Vaccines are safe. Vaccines are effective. Vaccines save lives. But why are parents “vaccine-hesitant”? The global comeback of measles and other preventable viruses is extremely worrisome. Over the past few months, over 200 new cases of measles have occurred in the US. Why is this happening? Why are parents “vaccine-hesitant”? Parents only want the best for their children. It’s great that they do their own online research and actively participate in their children's medical