Give Joe Biden some credit. On Jan. 27, he published an op-ed in USA Today recognizing that the coronavirus outbreak could become a big problem. But he devoted nearly the entire piece to bashing President Trump, then fighting off impeachment from Biden’s old Democratic colleagues on Capitol Hill, and nearly none of it to explaining what he, Joe Biden, would do to fight the pandemic.

Since then, where has Biden been? It’s been eight weeks since the Iowa caucuses, when Biden began a terrible stretch at the polls that threatened his presidential candidacy. It’s been three weeks since South Carolina and Super Tuesday, when he roared back and took a big lead over rival Bernie Sanders. Two weeks since primaries in Michigan and other states, when Biden took a prohibitive lead in the delegate race. And it’s been one week since primaries in Florida and elsewhere, when Biden essentially became the presumptive nominee.