This likely reflects similar alterations that result in the further elimination at least of pitted RBC during delayed anemia (Jaureguiberry et al., 2014), since the early drop in Hb (-15.9%) observed here is not explained by the decrease of iRBC and pitted RBC (-0.8% of all RBC during the three to five first day post-infection and therapy). This evidence concerns the gene GSTM1 and anemia.