AstraZeneca Covid Vaccine Trial Resumption In US Not Yet Known; UK Trial Resumed

British drug major AstraZeneca, which had halted the trial of coronavirus vaccine AZD1222 last week, has resumed the trial in the U.K, while it is still not certain when the company will start its US trial again. The company said it will continue to work with other global health authorities and be guided as to when other clinical trials can resume.