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This is now very outdated in the light of the data accounting for the more recent variants. This is probably a factor in the difference in mindset you mentioned in the first tweet of the thread.
Source for this? Reports I’ve seen show it to be a bit less effective in preventing transmission of new variants, but equally effective (90%+) jn preventing serious illness and death, which is what counts.
That’s from the recent report out of Israel which is the newest study I could find on it. But sample size is small and it contradicts other findings so unless there’s something more compelling I’m not worried.
I am not sure I am following the terms of comparison you are referring to, so apologies if I am misunderstanding. But see for example: https://www.cidrap.umn.edu/news-perspective/2021/07/study-2-covid-vaccine-doses-much-more-effective-1-against-delta … "One dose of either vaccine conferred much lower protection against Delta than Alpha (30.7% and 48.7%, respectively"
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