Vaccines giving 67% protection after three weeks, large-scale research shows
Vaccines giving 67% protection after three weeks, large-scale research shows Amy Coles, news reporter One dose of a COVID-19 vaccine gives 67% protection after three weeks, a leading epidemiologist has said. © Imagebridge More than 10 million people have been given their first COVID jab Professor Tim Spector of King's College London, who runs the ZOE COVID-19 surveillance app, said data collected from 50,000 users vaccinated with either the Pfizer or Oxford/AstraZeneca jab showed one dose gave 46% protection after two weeks, rising to 67% after three to six weeks. The app ...