olivia: dr. hotez, yesterday our twitter was in the day isn't sure the government be able to force you to vaccinate your children. we got a stunning response, far more responsive than we ever get, and he just of the critics is why should you care if i do not get my kids vaccinated if you get your kids vaccinated? we are trying to keep our opinions out of this, but how would you respond to that? dr. hotez: i am of the opinion that we should not allow unvaccinated children into our schools. it is too dangerous to the other children in the school. people talk about this as a civil liberties issue. i flipped that around the other way. when thomas jefferson wrote the declaration of independence, he talked about the right to liberty and happiness and mothers and parents of children in these affected counties

dr. hotezeen talking about this as a moral trade-off, but it also burdens public health system. do we have any sense of what the current outbreak is going to cost? dr. hotez: you are absolutely right, this is not only one of the leading killers in the world before we started spreading -- practicing widespread vaccination in the united states, we were looking at 500 deaths annually and 50,000 hospitalizations was that he could do the math -- that is a lot of dollars as well. measles will have not only a significant public health impact but also a significant economic impact. the other economic factor we have to consider is remember if you are a young mother or parent living in california or living in orange county california you have to be very fearful about bringing young baby that is not old enough to get immunized against measles out in public. she is going to remain shuttered, he is going to remain shuttered in the house. this is going to be a big deal. olivia: dr. hotez, yesterday our twitt

dr. peter hotez who was in here before to testify. he was the leader on neglected tropical diseases and i have a pending bill that we wrote with his very, very insightful suggestions on what it should look like. but i know he has said that he has concerns that a pandemic could arise out of syria or the region, war conditions lack of sanitation cholera all the other attending problems. the longer this conflict goes on, again, the spanish flu occurred near the end or at the end of all of the blood letting in world war i. i'm just wondering what your thoughts might be on that. i know we're more advanced than back in 1918. but when we and people like you don't have access to contested areas or health care workers are being killed because they're trying to assist, it makes it harder and these things could happen. what's your thoughts on that. >> i wonder sometimes whether or not you've read so much into my bio that you know that my husband works on pandemic prepare preparedness at u.s. aid actually. with the war that's raged on, the concer