[Press release – not published yet] Pfizer/BioNTech vaccine is 91% effective for at least 6 months

Pfizer and BioNTech Confirm High Efficacy and No Serious Safety Concerns Through Up to Six Months Following Second Dose in Updated Topline Analysis of Landmark COVID-19 Vaccine Study

Commentaries: Ongoing trial shows Pfizer Covid-19 vaccine remains highly effective after six months – CNN AND Coronavirus: Pfizer jab ‘stopping 91% of cases in first six months’ – BBC AND Expert reaction to press release from Pfizer and BioNTech on efficacy and safety up to six months after second vaccine dose, including data from South Africa – Science Media Centre AND Pfizer’s COVID-19 vaccine effective after 6 months and works against problem variant – LiveScience