Norman Swan
speaker
10,140 appearances
108 recordings
1 series
first heard Mar 2020
last heard 11 Aug
Norman Swan’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 2 in all, peaking in Aug 2026 with 1.
Appearances
So what was the what was the second dose effectiveness for the delta variant?
And second dose effectiveness for Astra was about sixty percent.
That's true, against all symptomatic disease.
It's much, much higher for severe.
disease and the Pfizer effectiveness was in was in the 80%, not ninety, ninety-three percent.
It was in the eighty percent.
So yes, there was a step up for the Pfizer, no question about that, but it wasn't up at the ninety-three.
So the ninety-five hundred percent is for severe disease and they both seem to do that job quite well.
Simply statistics.
I mean it it's simply the almost certainly the r reduced activity of the immune system as you get a bit older, not fully understood, but that's probably going to be the the answer.
And the other thing here is it's a sliding scale.
It's it's a it's what the statistician statisticians call a continuous variable, is that you've there are lots of things in medicine which are continuous variables.
Line up a hundred people and measure their blood pressure.
There'll be a steady gradation in blood pressure from low to high.
And there's no one spot where you say, you know, this is suddenly high blood pressure.
You've got to define it in terms of risks versus benefits, in terms of whether
You're going to give somebody a blood pressure drug.
Same for ADHD or behavioral problems.
And it's the same for this.
It's as it's a continuous variable of risk that declines as you get older for the clotting syndrome.
Showing 361–380 of 10,140 · page 19 of 507
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