UK medical adviser: One dose of AstraZeneca vaccine should be 70% effective after 21 days

Dec 31, 2020, 02:10 PM(IST) WION Video Team
One dose of Oxford/AstraZeneca's COVID-19 vaccine is around 70% effective after 21 days and before the second dose is given, a British doctor involved in the approval of the vaccine said on Wednesday (December 30).
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