If you want to know who is an expert on vaccination programs, look for the people focusing on the supply chain side of the new vaccine as opposed to the 70% efficacy that they found in a clinical trialhttps://twitter.com/onisillos/status/1330780021133340674 …
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will whether someone has already had Covid affect when they would have access to the vaccine?
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It's likely better than 70%, but to justify a stronger claim they'll need more data.
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In practice the claimed efficacy of 90-95% for the US vaccines may not be different than the 70% one quoted for the Oxford/AZ trial. The Oxford trial gave participants a weekly PCR test and picked up asymptomatic cases; the US trials didn't.
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The source for this ishttps://mobile.twitter.com/jwestjourno/status/1330801358270828546 …
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I have been wondering. Give that they had 130 cases of covid in total, is the difference between the two trial doses statistically significant?
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I believe it was, yes. A small number of cases but a huge number of participants
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But don't they say 90% effective when just a half dose given as the first jab? So even cheaper.
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It appears that may be based on very few cases so wide confidence intervals. They seem to be doing the right thing by focusing on the overall 70% (though, as is my usual complaint, it would be even better if they released the numbers)
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"A vaccine that is 70% effective in the real world is still good enough to reach herd immunity" This might be less true in the USA where vaccines have huge potential to be political issues leading to a relatively low vaccination coverage.
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there is this too
says up to 90% ?https://twitter.com/samhaselby/status/1330924569641824260 …Thanks. Twitter will use this to make your timeline better. UndoUndo
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