walmart, three-month deal to sell those test kilts at $14 each, has lapsed. they are now raising the prices by as much as $10 a kit. david. >> just when so many families need these test kits. matt gutman, our thanks to you. i know there's been a lot of confusion on the cdc guidance. the cdc shortening the isolation period from ten days to five, but at first not suggesting a test to make sure before you leave isolation. so, i want to bring in dr. ashish jha, the dean of brown university school of public health and our friend. dr. jha, great to have you back tonight. late today, the cdc clarifying their guidance, stating that if and individual has access to a test and wants to test, the best approach is to use an antigen test toward the end of the five-day isolation period. so, this still doesn't say they're saying you should test, perhaps they're aware of the testing problem in this country, the fact that we can't get kits everywhere in every part of this country. you have said folks should test and, again, help clear up