Delaying the 2nd dose to 12 weeks was always most likely going to elicit a better response, this is customary for vaccines. It would have been much more supposi

Delaying the 2nd dose to 12 weeks was always most likely going to elicit a better response, this is customary for vaccines. It would have been much more supposing scientifically if this much shorter timeline did better. The UK's approach was never much of a gamble.