The previous surgeon general is probably right. The UK elected early on to space vaccine doses by 90 days, and not follow manufacturers recommendation. Germany has now adopted the same policy.
Models show this is the fastest way to reduce deaths and hospitalizations. The AstraZeneca trial tested 30, 60 and 90 day spacing intervals, and the best immunity was a 90 day spacing. So the UK took the risk of applying the data to the Pfizer vaccine as well.
Over 30% of the UK has received at least one dose of one or other of those vaccines, mostly the AstraZeneca vaccine. The results have been spectacular, with mortality in the over 80 group down 70%, and over 65 by 65%. The results are exceeding the models.
You can see deaths are falling faster then the models are predicting. Also the more infectious and virulent UK variant is dominant in the UK now by a big margin.
As of Monday 96% if the UK population over 70 have received one dose. Hospitalizations are down 80%.
56% of the over 80s have a good antibody titers now. 25% of the UK population over 16 years of age now show antibodies. This is a combination of passed infection and vaccination.
This is excellent news for us here in the US also. I strongly believe we should also go to a 90 day vaccine spacing. We should also go ahead and approve the Oxford AstraZeneca vaccine in the US and not delay approval to April or May. Clearly is is a highly effective and safe vaccine.