IL10 and infection: While younger children tended to have higher parasite densities (Figure S1B in Supplementary Material), age did not fully explain the relationship between IL10-producing cells and parasite density during recent infection, as the association with parasite density and total IL10 or IFNγ/IL10 coproducing cells remained significant after controlling for age, dMER, and current infection (adjusted regression coefficient for total IL10 0.15, p < 0.001 and for IFNγ+/IL10+ cells 0.16, p < 0.001).