From a population health perspective, the difference is potentially large, but to the average person being immunised the difference between not getting COVID-19 at all and having a mild/asymptomatic infection is modest
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Obviously, this calculus changes for the most vulnerable people and healthcare workers, but for everyone else at an individual level the specific vaccine you get probably doesn't matter as much as people have been implying
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It’s a long shot to say AZ prevents severe disease. Its inconclusive the data
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I also doubt the "prevents severe disease" for AZ vax. The study was vastly underpowered to show that, and the interim results even more so.
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And why is that?
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I thought those numbers meant a 5% chance of severe disease and a 38% chance of severe disease after vaccination?
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It's % reduction in probability of contracting it *relative to those who do not receive the vaccine*. But the fraction who contract it even without the vaccine is relatively low.
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This message seems to be completely lost in the debate
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Could you clarify? Do you mean, e.g., the first one is 62% effective at preventing severe disease, or do you mean it's 100% effective at preventing severe disease and 62% effective at preventing Covid of any severity?
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