Concentrations of Th-2 cytokines (IL-4, IL-5, and IL-13) as well as expression all the genes (<i>IL-4</i>, <i>IL-5</i>, and <i>IL-</i>13) were found to be greater (<i>p</i> < 0.05) in resistant sheep on different days post infection. The gene discussed is IL13; the disease is infection.