Report to JCVI on estimated efficacy of a single dose of Pfizer BioNTech (BNT162b2 mRNA) vaccine and of a single dose of ChAdOx1 vaccine (AZD1222)

This report outlines the estimated single dose vaccine efficacy (VE) of the Pfizer and ChAdOx1 Covid-19 vaccines as discussed at the JCVI COVID-19 sub-group meeting of December 22nd December 2020. The ChAdOx1 estimates were presented by the Oxford team to the JCVI COVDI-19 sub-committee in a presentation and also in a clinical overview document. The Pfizer estimates were verbally given by PHE during discussion and were based on data previously provided to the sub-committee.