Correction to: Nature Immunology https://doi.org/10.1038/s41590-018-0272-2 (2018), published online 11 December 2018.

In the version of this article initially published, the equal contribution of the third author was omitted. The footnote links for that author should be “Sara Nejat1,11” and the correct statement is as follows: “11These authors contributed equally: Sarah A. Dick, Jillian A. Macklin, Sara Nejat.” The error has been corrected in the HTML and PDF versions of the article.