December 30 According to a report by the British Mirror on the 30th, the British drug regulatory authorities approved the coronavirus vaccine jointly developed by Oxford University and AstraZeneca on the same day.
The United States reported 180 cases of hepatitis in children with unknown causes, spreading to 36 states and territories.
May 19 - On the 18th local time, the U.S. Centers for Disease Control and Prevention (CDC) announced that 180 cases...
