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Transmissible delta variant. but it's actually another variant, the beta one, first discovered in south africa, which is now the focus of oxford university's latest vaccine trial. the university's top scientists say there's a good reason for that. the delta variant, we are seeing very high levels of protection in the uk, over 90% for the vaccines we're using in the uk, so there is no immediate urgency around the delta variant. this is much more about being prepared for this quite testing variant, the south african one, and also future variants. the oxford team also said today that a third dose...

Be needed in the uk. they also say it would be wrong to give third doses while some countries had no vaccines at all. 0ur health correspondent naomi grimley reports. the uk has been vaccinating vast numbers of people for months now, and it's more important than ever that people get two jabs, as infections are rising again, with the advent of the more transmissible delta variant. but it's actually another variant, the beta one, first discovered in south africa, which is now the focus of oxford university's latest vaccine trial. the university's top scientists say there's a good reason for that....