Study: Single dose Pfizer Covid-19 vaccine effectiveness estimated at 90% after 21 days

Estimating the effectiveness of the Pfizer COVID-19 BNT162b2 vaccine after a single dose. A reanalysis of a study of ‘real-world’ vaccination outcomes from Israel. – medRxiv

Commentaries: One Pfizer/BioNTech jab gives ‘90% immunity’ from Covid after 21 days – The Guardian AND Expert reaction to preprint reanalysing study of real-world Pfizer vaccination outcomes after one dose from Israel – Science Media Centre

Commentary on Twitter

A study on "real world" effects of vaccination in Israel

? Single dose 90% effective at 21d ?

"…results coming from Israel support the UK policy of extending the gap between doses by showing that a single dose can give a high level of protection."https://t.co/smnZUPJkZp

— Alasdair Munro (@apsmunro) February 4, 2021