twitter.com/PeterStefanovi2/status/1363752574558621697
This has really cheered us up as we await further details of the um road map.
Apparently they chose March 8th on purpose as by mid April all over 50s would be vaccinated and this would have given time for immunity to develop (I paraphrase)
If you can understand his plan any better do elaborate. I think the underlying principles of vaccinating vulnerable people are really good but it ... sort of goes wrong.