Correction to: Nature Immunology https://doi.org/10.1038/s41590-019-0312-6 (2019), published online 18 February 2019.

In the version of this article initially published, a foundation in the Acknowledgements section was identified incorrectly (Mathers Charitable Trust). The name correct name is ‘The G. Harold and Leila Y. Mathers Charitable Foundation’. The error has been corrected in the HTML and PDF versions of the article.