Race against time to tweak vaccines against Omicron variant: AstraZeneca, Pfizer and Moderna say they can create NEW jab for super-mutant amid claims it makes existing ones 40% less effective against transmission
- Scientists are racing to tweak existing vaccines against new Covid variant spreading across the planet
- The Omicron strain has reached the UK and Belgium after originally being discovered in South Africa
- Now a number of pharmaceutical firms have said they are working to adapt their vaccines to beat Omicron
- AstraZeneca said it is working with Oxford University to quickly develop a vaccine in response
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