The number of eggs in utero and female body length was positively associated with the inflammatory (RORγ and IFNγ, single infection) and T‐cell regulatory (IL10, dual infection) responses and negatively with type 2 (IL13, single infection), T‐cell (TGFβ, dual infection) and type 1 (Tbet, single infection) reactions. The gene discussed is IFNG; the disease is infection.