Pfizer and AstraZeneca’s Covid-19 vaccines are not as effective in fighting off the Omicron variant compared to other strains, research suggests.
The study, which has yet to be peer-reviewed, discovered that some of the participants “failed to neutralise [the virus] at all”.
An Israeli health worker administers a dose of the Pfizer/BioNTech Covid-19 vaccine to a student on December 12, 2021. Picture: Jalaa Marey/AFP “These data are important but are only one part of the picture. They only look at neutralising antibodies after the second dose, but do not tell us about cellular immunity, and this will also be tested,” said Matthew Snape, Oxford professor and co-author of the paper.
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