MAIT cells were found to be polarized to a Th1-like phenotype, with highest proportions, and numbers, of cells producing TNF, IFNγ, and GM-CSF, but few detectable IL-17-producing cells during the acute phase of infection (6 dpi) (Fig. 3 and Supplementary Figs. 4 and 5). Here, IL17A is linked to infection.