Britain on track for spring Covid-19 vaccine roll-out, Oxford researcher
Britain is on track to make COVID-19 vaccines widely available by next spring after the shot developed by Oxford University and AstraZeneca was up to 90% effective in trials, the head of the university`s Jenner Institute said on Monday.
Initial late-stage trial results published on Monday showed that a regimen of two full doses was 62% effective in shielding people from COVID-19, though the efficacy rate jumped to 90% if the first shot was only half a normal dose.