Astra Zeneca promoting hand picked results:
The Oxford-AstraZeneca story is very different, though. Presumably, neither of the two trials from which they combined data could have provided a clear answer on the vaccine’s efficacy on its own. To make things worse, Oxford-AstraZeneca reported only the results for certain subgroups of people within each one. (For perspective on this: The two subgroups chosen leave out perhaps half the people in the Brazilian trial.) Meanwhile, one of their key claims is that giving half a dose of the vaccine on the first injection, followed by a standard dose on the second one, led to better outcomes—but neither of these trials had been designed to test this hypothesis. In fact, it’s since emerged that the half-dose/full-dose option started out as a mistake, and one that was only caught when some people in the study didn’t have the usual high rate of adverse effects.
There were other dosing issues, too, that haven’t been explained even though dosing is the centerpiece of the press release. There are many different regimens in these trials—the UK study has more than two dozen arms, meaning the volunteers were divided into that many groups according to age and how much of the vaccine would be administered and
when. The doses are measured by the number of altered viral particles they contain, and the developers decided that the standard dose would be 5 x 1010 viral particles. But for many of those arms in the UK trial—as well as everyone who got the vaccine in the Brazilian trial—publicly available trial information shows that the standard dose could be between 3.5 and 6.5 × 1010 viral particles. The lower end of that range isn’t far off from a half-dose.
So here we are at the end of November. BNT-Pfizer and Moderna have offered up a masterclass in how to do major vaccine trials quickly in a pandemic, while Oxford-AstraZeneca has, for the moment, only an assortment of smaller ones ready to look at.
(See article for more oddities)
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Said Peter...what you're requesting just isn't my bag
Said Daemon, who's sorry too, but y'see we didn't have no choice
And our hands they are many and we'd be of one voice
We've come all the way from Wigan to get up and state
Our case for survival before it's too late
Turn stone to bread, said Daemon Duncetan
Turn stone to bread right away...
