neil: dr., thank you very much, gregory glenn, novavax.been up yesterday in the markets, but this is seen as potential drag on the global economy, i'm -- not only with restricted flights coming in and out of asia but the idea that this could avenge on the ability to do good, we have susan li joining us and charles payne joining us, charles, is this still a worry of yours, that ending we can't predict yet? charles: i will say this, your guest as a vaccine company that they have to assume the worst, as an investor and by the way as an american and investor i don't assume the worst in part because we have gone through so many things like that, you guys referenced sars, 17% in hong kong, and the world overcame all of that, we had a great week this week in the stock market and, in fact, the best week in about 6 or 7 months depending on what index you measure it by, obviously we are concerns, our prayers go out, we knows they'll be short-term hiccup that impacts america but right now i'm not going sell my shares of united rental, i'm not going t