Correction to: Nature Medicine https://doi.org/10.1038/s41591-021-01484-6, published online 13 September 2021.

In the version of this article initially published, there was a composition error in Fig. 2, where point (2) duplicated point (5), whereas the text should have and now reads “(2) USG develops statistical plan for conducting correlates of protection analysis, coordinates sample selection with vaccine manufacturers.” The error has been corrected in the HTML and PDF versions of the article.