For those still concerned about the whole 'one dose' thing, I would suggest having a read of this thread from a vaccine researcher at Oxford, was also retweeted by the fantastic Devi Sridhar, who's been spot on about nearly everything during the pandemic...
Some points with this:
* yes the dosage error was initially a mistake, but after they found out , the parameters of the trail were altered to include the 'wrong dosage' participants with the full blessing of regulators.
*the full data hasn't even been released anyways, so there's no possible...