Correction to: Nature Medicine https://doi.org/10.1038/s41591-024-03419-3, published online 7 January 2025.

In the version of the article initially published, in Fig. 1, the boxes “194 were assigned to the suraxavir group” and “1 did not receive suraxavir” should have read “194 were assigned to the placebo group” and “1 did not receive the placebo” and have now been corrected in the HTML and PDF versions of the article.