With further reading, CDC started to screen travelers in mid January, but this was with the flawed test. By the time the test was fixed, the virus was here. Positively identified in Washington State. Without testing, you don't know where else it's gotten to. Each specialist I have read said travel bans were not going to keep the virus out. You needed a mitigation strategy for when it did arrive.
And so...
~ Mike Ryan, World Health Organization's head of emergencies
And so...
"Without testing, you have no idea how extensive the infection is. You can't isolate people. You can't do anything," he says. "And so then we're left with a completely different set of choices. We have to shut schools, events and everything down, because that's the only tool available to us until we get testing back up. It's been stunning to me how bad the federal response has been."

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