Oh, okay, so good news is that it's sounding way better.

Bad news is there is a considerable amount of rust in my microphone.

What do you mean in the microphone?

I don't know, what's the producer, like it's butt part.

The axel are cable.

Like in its butt, like in the little prongs,

you're listening to shortwave from NPR.

Maddie's the fire here, and today I'm joined by science correspondent Jeff Brumfield.

Hi there, Maddie.

Hey Jeff.

So you've been looking into a really puzzling feature of some cases of COVID-19.

Yeah, I don't think there's really a medical term for it,

but we'll just call it the seven day crash.

Basically what happens is this, when somebody gets COVID,

at first they may not feel sick at all,

but pretty soon most people start to develop these symptoms we've been hearing about.

Fever, chill, maybe a dry cough,

and this stuff can go on for days, and it can get pretty bad.

But for a subset of these patients,

they may start to feel a little better like they're turning a corner.

And then suddenly they get worse.

Their lungs start to deteriorate really quickly,

...