"Imagine a world under which the president holds a press conference in the first week in February."
How else would you interpret a travel ban from China?
We agree that Trump has mishandled the response. But there is no reason to think that a Dem president would have responded faster than he did, considering the Dems spent February calling him a racist for the travel ban, and encouraging Americans to go about their normal business.
It was only afterwards, into March, where the President started to try and push responsibility down to the States, where the case can be made that the Dems would have handled matters more competently.