. >> caitlin collins from cnn. >> thanks so much and things for doing this. two questions. one, are you worried that widespread at home testing is going to affect the public tracking of cases, and are you asking people to report their own positive cases question mark and secondly, is this a guarantee from the government that from now on, inexpensive, rapid testing is widely available given the numbers -- the number still seems low if this is going into the idea of people testing on a regular basis while they are at home question mark --? >> dr. walensky? dr. walenksy: thank you. we continue to track pcr's and pcr pups to the test positivity. some of these tests work through an app. some of them will confirm by pcr positivity. we continue to track cases and we are relying on people to report positivity. >> it's important when we talk about 200 million at-home rabbit tests, just one part of the testing landscape. we also have lab-based pcr tests as it just described, free pharmacies, that is the 20,000 locations we are expanding to plus another 10,000 sites around the country

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