Oxford developed vaccine AstraZeneca accidentally reached 90% effectiveness. This happened when some of the trial participants got only half of the dose in their first shot. After this happened, the researchers scheduled a full dose/booster in the second shot where surprisingly milder side effects were experienced. The vaccine is said to be 62% effective for those who received two full doses and 90% for the people who were accidentally injected one and a half dose.
Oxford Vaccine accidentally turns 90% effective
