The authors reported that IL-33 deficiency increased S. venezuelensis faecal egg release at day 8 p.i. and simultaneously abrogated lung ILC2 expansion, IL-5 production and lung eosinophilia, while i.n. application of recombinant IL-33 rescued these features in IL-33-/- mice [22]. The gene discussed is IL33; the disease is Increased total eosinophil count.