Oh my favourite subject! LanX you could add to the list AstraZeneca's efforts to re-invent statistical testing and when messing things up using un-scientific, super-natural explanations.
Two full doses of the vaccine appeared to be only 62% effective at preventing disease, while a half dose, followed by a full dose, was about 90% effective. That latter analysis was conducted on a small subset of the study participants, only 2,741.
And not counting the age signatures of the groups, I must add.
STEM: perhaps add Economics in there too?