TSLP and infection: Consistent with these data, we found that treatment of mice every 24 hours with dexamethasone beginning 24 hours before infection decreased lung TSLP expression and the total number of IL-13+ ILC2s at day 4 after infection compared with vehicle-treated mice, further highlighting the importance of TSLP during RSV-induced ILC2 activation (see Fig E4 in this article's Online Repository at www.jacionline.org).