G6PD and G6PD deficiency: Molecular epidemiological investigation on G6PD deficiency in vivax malaria patients has been initiated in Yunnan Province [16, 17] to carry out polymorphism analysis of the full coding region of G6PD gene, revealing that G > T (rs72554665) missense mutation at c.1376 locus could be used as the molecular marker for indicating G6PD deficiency.