AstraZeneca’s Covid-19 vaccine shows better-than-expected efficacy

Doctors, regulators, and government officials the world over are likely to breathe a sigh of relief at the results, which are better than expected and appear materially higher than those in previous studies.

The two-dose vaccine reduced symptomatic disease by 79%, the company said in a press release, and reduced severe Covid-19 and hospitalization by 100%. AstraZeneca said that the vaccine was equally effective in people over 65, where it had 80% efficacy.

Source: AstraZeneca’s Covid-19 vaccine shows better-than-expected efficacy