[mlyle]

Nah, the British are just delaying the doses, without any kind of trial in play (other than population-level observation).

[Closi]

There has been a study now, it's just not gone through peer review yet.

https://www.ft.com/content/de00fe75-9ba1-4be7-8cf1-6e9fa55f0...

Additionally the advice to delay the second dose is now also part of the WHO recommendations.

[mlyle]

Note that this is the AZ vaccine. They're also stretching second doses of the Moderna vaccine, which is what we were talking about trialing here.