https://www.newscientist.com/article/2294250-how-much-less-likely-are-you-to-spread-covid-19-if-youre-vaccinated/ https://www.newscientist.com/article/2294250-h

https://www.newscientist.com/article/2294250-how-much-less-likely-are-you-to-spread-covid-19-if-youre-vaccinated/ https://www.newscientist.com/article/2294250-how-much-less-l... A recent study found that vaccinated people infected with the delta variant are 63 per cent less likely to infect people who are unvaccinated. ... Others have worked out the full effect. Earlier this year, Ottavia Prunas at Yale University applied two different models to data from Israel, where the Pfizer vaccine was used. Her team’s conclusion was that the overall vaccine effectiveness against transmission was 89 per cent.