Re: Cases in the northern US.
Soon college kids from up there will head South for Spring Break and will cross pollinate with students from other parts of the country.
Here’s the thing: those college kids are already co-mingling with kids from China who came back to school in January. If those kids from China were infected, then they’d be sick AND their peers would be sick. And yet, so far, we haven’t seen a zillion cases in the US.