FILES-BRITAIN-HEALTH-VIRUS-VACCINE-ASTRAZENECA

(FILES) In this file photo taken on November 17, 2020 An illustration picture shows vials with Covid-19 Vaccine stickers attached and syringes, with the logo of the University of Oxford and its partner British pharmaceutical company AstraZeneca. – British drugs group AstraZeneca and the University of Oxford on November 23, 2020 said their jointly-developed vaccine against Covid-19 has shown “an average efficacy of 70 percent” in trials. The results ranged between 62 and 90 percent efficacy depending on the vaccine dosage. (Photo by JUSTIN TALLIS / AFP)