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Vitamin deficiencies are frequent in children suffering from malaria. The effects of maternal multivitamin supplementation on the risk of malaria in children are unknown. We examined the impact of providing multivitamins or vitamin A/ß-carotene supplements during pregnancy and lactation to HIV-infected women on their childrens risk of malaria up to 2 years of age, in a randomized, placebo-controlled trial. Tanzanian women (N = 829) received one of four daily oral regimens during pregnancy and after delivery: 1) vitamins B, C, and E (multivitamins); 2) vitamin A and ß-carotene (VA/BC); 3) multivitamins including VA/BC; or 4) placebo. After 6 months of age, all children received 6-monthly oral vitamin A supplements irrespective of treatment arm. The incidence of childhood malaria was assessed through three-monthly blood smears and at monthly and interim clinic visits from birth to 24 months of age. Compared with placebo, multivitamins excluding VA/BC reduced the incidence of clinical malaria by 71% (95% CI = 1191%; P = 0.02), whereas VA/BC alone resulted in a nonsignificant 63% reduction (95% CI = 4% to 87%; P = 0.06). Multivitamins including VA/BC significantly reduced the incidence of high parasitemia by 43% (95% CI = 267%; P = 0.04). The effects did not vary according to the childrens HIV status. Supplementation of pregnant and lactating HIV-infected women with vitamins B, C, and E might be a useful, inexpensive intervention to decrease the burden of malaria in children born to HIV-infected women in sub-Saharan Africa.
Received December 11, 2006. Accepted for publication March 13, 2007.
Acknowledgments: We are grateful to the women and children who participated in the study. The authors thank the field teamsincluding nurses, physicians, midwives, supervisors, lab staff, and the administrative staffwho made the study possible. The authors also thank the authorities at Muhimbili University College of Health Sciences, Muhimbili National Hospital, the City of Dar es Salaam Regional Health Authority, and the Tanzanian National AIDS Control Program for their institutional support.
Financial support: This study was supported by the National Institute of Child Health and Human Development (NICHD R01 32257).
* Address correspondence to Eduardo Villamor, Department of Nutrition, Harvard School of Public Health, 665 Huntington Ave., Boston, MA 02115. E-mail: evillamo{at}hsph.harvard.edu
Authors addresses: Eduardo Villamor and Wafaie W. Fawzi, Department of Nutrition, Harvard School of Public Health, 665 Huntington Ave., Boston, MA 02115, Telephone: +1 (617) 432-1238, Fax: +1 (617) 432-2435, E-mails: evillamo{at}hsph.harvard.edu and mina{at}hsph.harvard.edu. Gernard Msamanga, Department of Community Health, Muhimbili University College of Health Sciences, Dar es Salaam, Tanzania, E-mail: gmsamanga{at}muchs.ac.tz. Elmar Saathoff, Department of Tropical Medicine, University of Munich, Germany, E-mail: saathoff{at}lrz.uni-muenchen.de. Maulidi Fataki and Karim Manji, Department of Pediatrics and Child Health, Muhimbili University College of Health Sciences, Dar es Salaam, Tanzania, E-mail: mfataki{at}muchs.ac.tz, kmanji{at}muchs.ac.tz.
Reprint requests: Eduardo Villamor, Department of Nutrition, Harvard School of Public Health, 665 Huntington Ave., Boston, MA 02115, Telephone: +1 (617) 432-1238, Fax: +1 (617) 432-2435, E-mail: evillamo{at}hsph.harvard.edu.
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