Our results are consistent with a role for NCR+ or TBET+ ILC3s in immunity to C. rodentium as Hic1CD4 mice (deficient for HIC1 in T cells and LTi) are resistant to infection while Hic1Rorc mice (deficient for HIC1 in TH17 cells and all ILC3s) are susceptible. Here, HIC1 is linked to infection.