washington, as well as in oregon. shine tweeting in part, the entire baby boom population alive today had the measles as kids. bring back our childhood disease, they keep you healthy and fight cancer. cnn s chief medical correspondent dr. sanjay gupta is joining us now. sanjay, let s to talk about, but let s just start with the facts on measles and makes sure everybody out there watching knows what s most important here. this is a serious disease, it can lead to encephalitis and even death. yeah, look, ana, it s a serious disease, a highly contagious disease, perhaps one of the most contagious diseases on the planet. and there is a vaccine that s been around since 1963. it was around when darla shine was a kid, as well. let me just give you a sense of what life was like in the united states before the vaccine and after the vaccine. you can take a look at the numbers. 3 to 4 million people infected every year, 48,000 hospitalized, as you mentioned, encephalitis, 4,000 people would h