Also Read | The health nudge is merely a mirageBritain, the first western nation to launch its vaccination programme, has bucked the international trend by administering vaccines at an interval of 12 weeks in a bid to give a first dose of the vaccine to more individuals.Professor Matthew Snape from Oxford University called the study "extremely exciting", adding that it would provide "information vital to the roll out of vaccines in the UK and globally".If the study shows positive results, Britain's independent medicines regulator would formally assess the safety and efficacy of any new vaccination regimen before it is rolled out to patients.Disagreements between the UK and the European Union over vaccine supplies have boiled over in recent.