Nat. Immunol. 18, 733–743 (2017); published online 8 May 2017; corrected after print 20 July 2017

In the version of this article initially published, the source of the HSV-1 virus stock used in the study was identified incorrectly as a purchase from the Wuhan Institute of Virology, Chinese Academy of Sciences. The correct Acknowledgements section should begin “We thank F. Zhao (Wuhan Institute of Virology, Chinese Academy of Sciences) for HSV-1” and the second sentence of the third subsection of Online Methods ('Cells and reagents') should read “Herpes simplex virus type 1 (HSV-1) was obtained from F. Zhao (Wuhan Institute of Virology, Chinese Academy of Sciences).” The error has been corrected in the HTML and PDF versions of the article.