A Covid-19 vaccine developed by Pfizer and BioNTech appears to protect against a coronavirus variant spreading rapidly across the UK.
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A fourth COVID-19 vaccine could be approved for use in the UK within weeks after late-stage trials suggested it was 89% effective..
There are concerns that the large number of mutations in the South African coronavirus variant may make vaccines less effective
Concern has been raised about how effective coronavirus vaccines are against the new variant discovered in South Africa - as new..
