The correlation between assessed proinflammatory cytokines and CIIS in lambs naturally infected by pneumonic pasteurellosis revealed a positive correlation between CIIS and IL-6 and IFNγ (Table 4 and Table S1), while other estimated proinflammatory cytokines exhibited a negative correlation with CIIS (Table 4 and Table S1). The gene discussed is IL6; the disease is pasteurellosis.