paul offit: the history of vaccines is clear. if you start to decrease vaccine immunization rates, you start to see the diseases re-emerge. it's a history that we don't seem to learn from. narrator: paul offit is an infectious disease expert. he helped invent a vaccine to protect against rotavirus disease, which kills hundreds of thousands of children worldwide. as a pediatrician, he's witnessed firsthand children dying from preventable diseases. offit: i guess we all have our biases. mine is that i work in a hospital, and so, for example, in 1991 in the city of philadelphia there was a massive measles epidemic. of the nine children who died during that 1991 epidemic, seven of them died in our hospital. so we had to stand by and watch while we tried to support them. and you know, as doctors your job is to try and save children's lives, and when you stand helplessly by and watch them die, it's, um... it just gets to you. narrator: human history is scarred with stories of deadly germs destroying lives. 500 years ago, about one in t

remembering, the vast majority do choose to vaccinate so reenforcing that, finally, number 5, something paul offit says eloquently in the film, we are all in this together. whenever i struggled with people hitting me with their opinions about vaccines or their fears around vaccines are saying things i knew were scientifically inaccurate i had to find a place in myself where i could listen to them and think we are all in this together, we are all united by the need and desire to try to protect the ones we love, all of us, no matter your position and if you come from that position we can find a basis where we could have a good conversation. the broadcast last year of the original version, many many came forward to say the film helped with a new conversations that allowed those who just had questions to come forward and speak. very sane and nice conversation and the internet for about a week and people said please and thank you and would you mind answering this question it was terribly polite and that was wonderful to see and people who would normally hit hard had to be quiet because people with hesi