Oxford scientists working on new Covid vaccine to target Delta variant

understands, in the wake of rising infections in the UK and the highest daily death toll since March.’s team at the University of Oxford – the same scientists behind the AstraZeneca jab first rolled out in January. A source said the new vaccine was being designed with the aim of “having something on the shelf ready to scale up – if it’s needed”.

Aris Katzourakis, a professor of evolution and genomics at Oxford University, said if the 10 to 15 per cent figure “holds up to scrutiny”, then AY.4.2 “will eventually dominate”. Professor Eleanor Riley, an immunologist at Edinburgh University, said the biggest advantage would be to help bring widespread transmission in the UK “to an end”.

However, the source said that even “subtle changes” introduced to the manufacturing process as a result of switching to a modified vaccine could cause significant delays and hinder the global rollout of life-saving doses, at a time when millions of people remain unvaccinated. “There is therefore a case for rolling out Delta-specific vaccines,” Prof Riley said. “They are likely to be significantly better at suppressing infections in the community and may well bring widespread transmission in the UK to an end.

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