> A double-blind randomized trial for an mRNA vaccine Sorry, what is the relevance of this trial to the parent story about the UK? The vast majority of the UK

> A double-blind randomized trial for an mRNA vaccine Sorry, what is the relevance of this trial to the parent story about the UK? The vast majority of the UK's elderly and at-risk people got the first vaccines available there - the AstraZeneca jab, which is not a mRNA vaccine.