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Scientists zero in on long-sought marker of COVID-vaccine efficacy

Data from seven vaccination trials help to identify a blood marker for protection against the disease.
  1. Smriti Mallapaty

    1. Smriti Mallapaty is a senior reporter in Sydney, Australia.

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After people have been vaccinated against COVID-19, the levels of infection-blocking antibodies in their blood are a strong indicator of how much protection they’ve gained against the disease, according to a modelling study1. The research showed that the presence of even small quantities of these potent ‘neutralizing antibodies’ indicates that a vaccine is effective at protecting against COVID-19.

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doi: https://doi.org/10.1038/d41586-021-01372-6

References

  1. Khoury, D. S. et al. Nature Med. https://doi.org/10.1038/s41591-021-01377-8 (2021).

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