G6PD and malaria: The decrease in activity from malaria to follow-up was greatest in those classified as G6PD deficient at follow-up (<30% activity) (-79.1%, 95%CI: -117.8 to -40.4), compared to -43.7% (95%CI: -53.1 to -34.2) in those with intermediate deficiency at follow-up (≥30% to <70% activity), and -4.5% (95%CI: -7.6 to -1.4) in those who were G6PD normal at follow-up (≥70% activity) (Fig 1).