IL6 and malaria: Subgroup analysis of Plasmodium species showed higher mean IL-6 levels in patients with uncomplicated malaria than in controls among studies that enrolled patients infected with only P. falciparum (P = 0.008, WMD = 43.86 pg/mL, 95% CI = 11.52–76.2 pg/mL, I2 = 100%, 13 studies).