Death comes at you fast. Just three weeks ago the official line at the White House and Fox News was that the coronavirus was no big deal, that claims to the contrary were a politically motivated hoax perpetrated by people out to get Donald Trump. Now we have a full-blown health crisis in New York, and all indications are that many other cities will soon find themselves in the same situation.

And it will almost certainly get much worse. The United States is on the worst trajectory of any advanced country — yes, worse than Italy at the same stage of the pandemic — with confirmed cases doubling every three days.

I’m not sure that people understand, even now, what that kind of exponential growth implies. But if cases kept growing at their current rate for a month, they would increase by a factor of a thousand, and almost half of Americans would be infected.

We hope that won’t happen. Many although not all states have gone into lockdown, and both epidemiological models and some early evidence suggest that this will “flatten the curve,” that is, substantially slow the virus’s spread. But as we wait to see just how bad our national nightmare will get, it’s worth stepping back for a few minutes to ask why America has handled this crisis so badly.