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Why COVID vaccines are so difficult to compare

Despite the widespread roll-out of several vaccines, it could be months before they can be ranked.
  1. Heidi Ledford
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Yusuff Adebayo Adebisi knows that a vaccine that offers 70% protection against COVID-19 could be a valuable tool against the coronavirus pandemic in Nigeria — especially if that vaccine is cheap and doesn’t have to be stored at extremely cold temperatures. But what if another vaccine — one that is more expensive to buy and to store — was 95% effective?

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Nature 591, 16-17 (2021)

doi: https://doi.org/10.1038/d41586-021-00409-0

References

  1. Madhi, S. A. et al. Preprint at medRxiv https://doi.org/10.1101/2021.02.10.21251247 (2021).

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