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One is the underlying level of infection is rising, which is obviously the thing we are most concerned about, but in about 18 to 20 states, the number of tests that are being done is actually falling. And it's falling because our testing system is under such strain that we just can't even deliver the tests today that we were doing two weeks ago in about 18 to 20 states. That's very concerning because when cases are rising, and your number of tests are falling, that's a recipe for disaster.