Our leaders,including President Obama, gave mixed messages,putting doubt in the public’s mind about the safety of vaccines. Is seems that settled science moves around a bit. So now we have a mess. We can’t force parents to vaccinate their children. We can say you cannot go to government schools without the vaccinations. We can insist on vaccines for our visitors and immigrants before they enter the public domain. We can educate about the importance of vaccines. We can separate the vaccines and space them out. We can remove the mercury and other harmful additives. There is a lot we can do. Snarking as H Clinton just did with her sky is blue ,the earth is round tweet, is not helpful.