- Oxford AstraZeneca Covid vaccine has 70% efficacy, data reveals https://www.theguardian.com/society/2020/nov/23/astrazeneca-says-its-coronavirus-vaccine-has-70-per-cent-efficacy-covid-oxford-university?cmp=fb_gu&utm_medium=social&utm_source=facebook&fbclid=iwar3rsch2k-gawq8ldho7ff88wqv8svlryx-rsop1ol2st8siqlq7ajp7o0o#echobox=1606116102 27 comments worldnews
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