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Moderna develops new vaccine to tackle mutant Covid strain
US drugmaker warns current jab is far less effective against South African variant
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US drugmaker warns current jab is far less effective against South African variant
Full ArticleThe firm found that the new strains had "no significant impact" on the vaccine's neutralising properties.
The Covid-19 vaccine from Pfizer and BioNTech protects against two new mutant variants that are causing rapid spread across the UK,..