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Updated: Oct 5, 2025

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Optimization of a Quantitative Micro-neutralization Assay
Published on: December 14, 2016
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Relating In Vitro Neutralization Level and Protection in the CVnCoV (CUREVAC) Trial
Deborah Cromer1, Arnold Reynaldi1, Megan Steain2,3
1Kirby Institute, University of New South Wales, Sydney, Australia.
Abstract:
The vaccine candidate CVnCoV (CUREVAC) showed surprisingly low efficacy in a recent phase 3 trial compared with other messenger RNA (mRNA) vaccines. Here we show that the low efficacy follows from the dose used and the presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants and is predicted by the neutralizing antibody response induced by the vaccine.

