Oxford AstraZeneca Covid vaccine has 70% efficacy, data reveals | World news | The Guardianhttps://www.theguardian.com/society/2020/nov/23/astrazeneca-says-its-coronavirus-vaccine-has-70-per-cent-efficacy-covid-oxford-university …
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Oxford AstraZeneca Covid vaccine has 70% efficacy, data reveals | World news | The Guardianhttps://www.theguardian.com/society/2020/nov/23/astrazeneca-says-its-coronavirus-vaccine-has-70-per-cent-efficacy-covid-oxford-university …