you know, there s plenty other reasons to question that proposal that theory about herd immunity. didn t make sense. it would result in the sacrifice of hundreds of thousands of lives. what we have found since then is that the virus is so capable of shape shifting it gets in the way of herd immunity. we might have herd immunity to the wuhan virus but not to omicron. it s like we have a new character here, a screwed up sibling of what we started with and our immune system has potential to fight it off but it s challenging. so the herd immunity concept immunes that you deal with the same virus all the way along. this has not turned out to behave that way. neil: you worked with three different presidents dealing with viruses and far worse. any advice for future presidents how to handle crises like this?