Carl Hennigan

So that's number one.

Number two is then is to say there are much more than a cough and a fever.

There's a whole myriad of symptoms that appear in a systematic review, which has 19 studies in now, the majority in China, but some outside of China.

So there is, yeah, systematic review of 15 cross-sectional studies and four case series.

That include the study you've just included, which is one of the largest studies.

There are lots of preprints.

And then there's stuff that's gone through journals that actually has some element of peer review and some element we feel of consistency and accuracy.

We're finding lots of problems with the preprints.

We're just not quite sure how they arrived at the figures, whether they're accurate.

They don't have tables with numerators and denominators in.

So they've been rushed out there.

So we feel like when we look at them, and we've even got one where it's been published twice with the same data and they don't look the same.

So we're focusing on the peer reviewed publications.

And I think there are some important aspects.

The first thing we're railing against is providing a point estimate.

So what you'll see is, for instance, 90% of people have a cough.

Well, actually, across the 19 studies, cough in adults varies between 48 and 74%.

So there's actually quite a wide range, depending on where you are in the context.

Fever is much tighter, 89 to 96% of adults.

But get this, in children, fever is 28 to 60% of children.