 to see if there's evidence of erosion. There was a poll in New Hampshire today that showed him two points behind Donald Trump. He won the state by eight last time. He was up 10 in a poll in the same state, the same poll in December. Those kinds of things are going to be looked at closely, like doctors look at blood tests and MRIs in the next week to try and figure out where this thing is at. But let me just say this. You asked, is it possible to swap vaccines?