This is interesting. In canada we had a longer waiting time between the shots because of lack of supply. People who got it earliest (older, etc) generally had a

This is interesting. In canada we had a longer waiting time between the shots because of lack of supply. People who got it earliest (older, etc) generally had a 12 week waiting time I think though it may have been shortened as we got more supply. I got my first (pfizer) as soon as I was eligible, and could get my second 8 weeks later. I think people that got their first shot later could wait a much shorter time, i.e. the recommended 3/4 weeks. It would be interesting to see if its possible to disentangle the effects of the way they were rolled out in different countries to see how much of a difference timing makes.