IFNG and malaria: Overall, the results demonstrated that patients with severe malaria had higher mean IFN-γ levels than those with uncomplicated malaria (p < 0.001, MD: 13.63 pg/mL, 95% CI 6.98–20.29 pg/mL, I2: 99.02%, 14 studies/15 study sites, 652 severe cases/1096 uncomplicated cases, Fig. 2).