if the diseases like mersa keeps me up at night. i've seen these health systems. they are getting better at the ability to respond. part of my job in nebraska was to help the hospitals get better, but they know the risk of these infections in the united states and its ally worry about this as another example. a third example and i will stop there and that is hiv-aids. another you think of it in terms of sexual behaviors or drug abuse and let's remember it was another one of those. it's spread from human to human so why worry about another like that that spread through some other mode is a long information period before you get really sick and by the time you discover it's already spread widely, so thoset' are some of e things that keep me up at night about for the next pandemic could be. that could have significant mortality. >> whe >> when i call on you, please introduce yourself. >> death was fascinating to. here you are the most experienced person t so the question is first of all what is the difference between thehe controlled measures for the smaller populati