GSTM1 and anemia (phenotype): We found, in the SAC, an overall prevalence of Schistosoma infection at 55.8%, malaria infection at 16.9%, stunting at 28.7%, underweight at 17.1%, thinness at 7.1%, and anemia at 49.4%, with a median Hb level of 11.6 g/dL (IQR: 10.5–12.6 g/dL).