will get it even if you're vaccinated and boosted. mike, the cdc announced today that they are going to limit the number of isolation days, five days, from ten. rochelle walensky conceded they want something that's workable for the public, something they can swallow for this, and ten days was just too long. >> yeah, that's right, katy, at today's covid response briefing we had a lot of ground to cover, including questions about the availability and the accuracy of testing, questions about just what we're learning about the virus itself, questions about whether we'll be talking about a fourth booster in a matter of months as we're already starting to see in israel. a lot of the areas where this white house is on defense right now has to do with the guidelines the cdc announce just this week. we've been hearing more about something of a balancing test that the administration is considering here. they want to be able to see