Published Date: 2020-11-27 00:21:08, Category: News (460573)Time: 01:30 min, View Count= 24 ( + More Social Media views ) , Rating= Title: Questions over AstraZenecas COVID-19 vaccine dataKeywords: Questions AstraZeneca' COVID-19 vaccine data Description: Days after grabbing headlines with its COVID- vaccine for the world, AstraZeneca is facing tricky questions about its success rate that some experts say could hinder its chances of getting