Randomized Trial of Vitamin D Supplementation and Risk of Acute Respiratory Infection in Mongolia

  title={Randomized Trial of Vitamin D Supplementation and Risk of Acute Respiratory Infection in Mongolia},
  author={Carlos A. Camargo and Davaasambuu Ganmaa and A Lindsay Frazier and Franca Fabiana Kirchberg and Jennifer J Stuart and Ken P. Kleinman and Nyamjav Sumberzul and Janet W. Rich-Edwards},
  pages={e561 - e567}
OBJECTIVE: Observational studies suggest that serum levels of 25-hydroxyvitamin D (25[OH]D) are inversely associated with acute respiratory infections (ARIs). We hypothesized that vitamin D supplementation of children with vitamin D deficiency would lower the risk of ARIs. METHODS: By using cluster randomization, classrooms of 744 Mongolian schoolchildren were randomly assigned to different treatments in winter (January–March). This analysis focused on a subset of 247 children who were assigned… 

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