Correction to: Nature https://doi.org/10.1038/s41586-021-04043-8published online 27 October 2021

In the version of this article initially published online, there was an error in Fig. 1. Specifically, in the “Evolutionary index” box, the approximate to symbol was missing in the formula now reading:

$${E}_{v} \sim -\log \frac{P({x}_{v}|\theta )}{P({x}_{\mathrm{WT}}|\theta )}$$

This error has been corrected in the online version of the Article.