Correction to: Nature Microbiology https://doi.org/10.1038/s41564-018-0245-0, published online 17 September 2018.

In the version of this Letter originally published, in Fig. 2d, in the third graph, the label for the y axis was incorrect as ‘TNF-α (pg ml–1)’; it should have read ‘IL-1β (pg ml–1)’. This has now been corrected.