I think there was almost 3,000 Chinese that flew into San Francisco between Dec 30 and Jan 20. Makes sense it’s gonna hit out there.
Yikes that is a big number. So either we got lucky, we had divine protection, it hadn't spread enough, or worse we're not catching the cases.
The 3000 would have been from all over China, not just Wuhan. And even the odds if they were from Wuhan that they were infected would be small.
Now, not so much, and I fully support the air travel bans and quarantining.