You know the drill. Additions since last iteration are in peach. Data sources (and explanations) are below. Pfizer A Lancet study (blood from 250 people) found Delta reduced neutralization antibodies by 5.8-fold A study in the UK (1,054 people with Delta) found 87.9% efficacy 2 weeks after the second dose. Efficacy after one dose was 33.2%.
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