Anna Nowogrodzki Latest articles by Anna Nowogrodzki COVID-19 vaccines: What does 95% efficacy actually mean? By Anna Nowogrodzki published 11 February 21 You have likely heard that Pfizer's COVID-19 vaccine efficacy is 95%, Moderna's is 94% and Johnson & Johnson's is 66%. But what do these numbers actually mean? Coronavirus Sign up for the Live Science daily newsletter nowGet the world’s most fascinating discoveries delivered straight to your inbox.Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors LATEST ARTICLES1Intrepid baby-faced robot is the world's humanoid first to fly2Final photo from iconic US satellite shows how Las Vegas has 'doubled' in size over the last 25 years3We finally know why Queen Hatshepsut's statues were destroyed in ancient Egypt4'Deciphering these mysterious strings': How reading the Inca's knotted cords can reveal past droughts and deluges5'Staggering' first images from Vera C. Rubin Observatory show 10 million galaxies — and billions more are on the way
COVID-19 vaccines: What does 95% efficacy actually mean? By Anna Nowogrodzki published 11 February 21 You have likely heard that Pfizer's COVID-19 vaccine efficacy is 95%, Moderna's is 94% and Johnson & Johnson's is 66%. But what do these numbers actually mean?
