Switzerland has refused to approve the AstraZeneca Covid, vaccine with regulators raising concerns over insufficient test data and arguing 'new studies' are needed. It comes after France, Sweden and Germany advised against administering the jab to those over 65 and Emmanuel Macron claimed it was 'almost ineffective' for the age bracket. That is despite Oxford data published this week suggesting the jab is 76 per cent effective after just one dose, and may also prevent 67 per cent of infection. British Prime Minister Boris Johnson has also weighed in, saying the jab is 'is very good and efficacious' in all age groups. Continental objections to the jab come amid a furious row between the EU and AstraZeneca over lagging supply, which has seen newly-unshackled Brexit Britain storm ahead in its immunisation roll-out.