Let's all learn something about measles today...

...Measles is caused by an enveloped, single strand RNA virus which naturally only has humans as a host. Before the vaccine, more than 50% of people had measles by the age of 6 with more than 90% by the age of 15. Prior to 1963, 3 to 4 million people would have measles per year with an average of 450 deaths...