Follow-up on one dose vaccine strategies

This is Joseph

As a general follow-up, I have never seen a fun discussion overtaken so quickly by events.  

In Ontario, Rick Hillier has actually requested Health Canada to approve single dose Moderna.

We’ll have the answer from population level data to a high enough precision for public health decisions, as we can limit the bias to low enough for public health decisions by comparing Canadian provinces. Meanwhile, the UK said “why not both”. They approved the Oxford vaccine and allowed a 3 month gap for the Pfizer vaccine, which is basically pushing on both pathways at once (increasing supply via the fast to make vaccine and stretching out the high-efficacy Pfizer one). 

So I suspect we’ll know the answer from observational administrative data in about the same time frame as we would from a clinical trial. It is high time we get to do some fun observational work

P.S. There is a robust discussion over on Andrew Gelman's blog.