WORLDAstraZeneca Covid-19 Vaccine Shows 76% EfficacyNeha VermaMarch 25, 2021April 8, 2021 by Neha VermaMarch 25, 2021April 8, 202101032 After getting a red flag on its US trial from the independent data safety monitoring board (DSMB), AstraZeneca plc on Thursday announced results based on...