Videographic explaining how vaccines work. Pharmaceutical giant AstraZeneca said Monday that US trials showed its Covid-19 vaccine was 100 percent effective in preventing severe disease, even as a poll showed trust in the jab had plunged in many European countries.VIDEOGRAPHIC

Subscribe to AFP and activate your notifications to get the latest news 🔔
http://www.youtube.com/channel/UC86dbj-lbDks_hZ5gRKL49Q/?sub_confirmation=1