4.7 Article

Iron Status of Burkinabe Adolescent Girls Predicts Malaria Risk in the Following Rainy Season

Journal

NUTRIENTS
Volume 12, Issue 5, Pages -

Publisher

MDPI
DOI: 10.3390/nu12051446

Keywords

iron biomarkers; malaria; adolescent girls; menarche; body mass index; Burkina Faso

Funding

  1. National Institutes of Health
  2. Eunice Shriver National Institutes of Child Health and Human Development [NIH-1U01HD061234-01A1]
  3. NIH Office of Dietary Supplements [02S2, 05S1]

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High levels of storage iron may increase malaria susceptibility. This risk has not been investigated in semi-immune adolescents. We investigated whether baseline iron status of non-pregnant adolescent girls living in a high malaria transmission area in Burkina Faso affected malaria risk during the following rainy season. For this prospective study, we analysed data from an interim safety survey, conducted six months into a randomised iron supplementation trial. We used logistic regression to model the risk of P. falciparum infection prevalence by microscopy, the pre-specified interim safety outcome, in relation to iron status, nutritional indicators and menarche assessed at recruitment. The interim survey was attended by 1223 (82%) of 1486 eligible participants, 1084 (89%) of whom were <20 years at baseline and 242 (22%) were pre-menarcheal. At baseline, prevalence of low body iron stores was 10%. At follow-up, 38% of adolescents had predominantly asymptomatic malaria parasitaemias, with no difference by menarcheal status. Higher body iron stores at baseline predicted an increased malaria risk in the following rainy season (OR 1.18 (95% CI 1.05, 1.34, p = 0.007) after adjusting for bed net use, age, menarche, and body mass index. We conclude that routine iron supplementation should not be recommended without prior effective malaria control.

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