'Totally different to delta': Doctor on the new symptoms of Omicron variant coronavirus
Antibodies from the Pfizer vaccine may be up to 40 times less effective against Omicron than the original COVID strain, the first lab tests on the new variant in South Africa have shown.The study found antibodies from people who had been vaccinated as well as naturally infected with Covid were significantly more effective against Omicron - suggesting boosters may bring a significant benefit.
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