
We knew Covid-19 vaccines worked. Now we know more.
CNN
Studies have shown that several vaccines are highly effective in preventing people getting seriously ill from Covid-19. Now, early results from a survey in the UK suggest two commonly used vaccines can significantly reduce infections.
Twenty-one days after the first vaccine, odds of a new Covid-19 infection were reduced by 65%, according to results from the COVID-19 Infection Survey, coordinated by the University of Oxford, the Office of National Statistics and the Department for Health and Social Care. The largest reductions in odds were seen after a second dose, it said.More Related News













