Randall
J. Randall Murphy
The question is then who in the CDC knew what either before or after the WHO did. Whatever the case, if I'm recalling correctly, the CDC were making more serious recommendations than the WHO. Perhaps that may have helped. But how much? Travel advisories were issued and airlines began cancelling flights back at the end of January. Maybe some before. I don't have all the data.The issue is mostly that China underplayed its severity. Remember WHO includes people from the CDC. So they knew what WHO knew.
The first cases that really got our attention were the ones on the cruise ships, and most of those cases were being isolated or quarantined. By then, the virus had already flown in by whatever escape routes it had taken from Wuhan. At that time the US healthcare system had no way to track them, didn't know the numbers, and was in no position to immediately launch a crackdown anyway.