Short-course standard dose primaquine treatment (2022): To prevent relapse, an additional treatment option of using primaquine 0.5 mg/kg/day for seven days is recommended to treat P. vivax or P. ovale malaria in children and adults (except pregnant women, infants aged < 6 months, women breastfeeding infants aged < 6 months, women breastfeeding older infants unless they are known not to be G6PD deficient, and people with G6PD deficiency).