direct to your inboxThe University of Oxford’s coronavirus vaccine offers protection of 76% up to 12 weeks after a single dose and may reduce transmission by 67%, according to a new study.After the second dose, vaccine efficacy from two standard doses is 82.4% with the three-month interval being used in the UK, researchers from the University of Oxford say.The data from the study, which has not yet been peer reviewed, supports the four to 12-week prime-boost dosing interval that many global regulators have recommended.Analyses of positive coronavirus swabs in the UK population suggest the vaccine may have a substantial effect on transmission of the virus, with a 67% reduction in positive swabs among those vaccinated with the.