Despite their diversity, the mammalian immune response against these helminths is consistently of the type 2 phenotype characterized by IgE antibody production, eosinophilia, mastocytosis, and specific forms of fibrotic wound repair under the control of the cytokines interleukin-4 (IL-4), IL-5, and IL-13. Here, IL4 is linked to Increased total eosinophil count.