so what we're trying to do is ensure that things are previn tive like flu shots are give without co payments. that's something the affordable care act with expand. host: democrats line, hi. caller: hi, hi good mornings doctors, how are you? guest: good, good. caller: i received my flu vack keen on october 7 and i'd like to find out how long before it's truly in my system? guest: it generally takes two weeks to get to the last several. you have to give the somebody an immune system for a chance to recognize what's in the vaccine and settle responses to it. in general, that takes effect where you have relatively good protection by two weeks, by a month and beyond you have excellent protection. caller: and i always say a test shot and get sick. guest: that is not true. what happens is you're in the beginning of middle of the flu season. you get a flu shot and actually didn't give you the familiar. it actually perfected before you picked the pull protection of the vaccine came on. but this idea that the flu shot gave us the flu as many people you and i hear that from, it's just not the case. hos