Evaluation of vitamin D levels in Indian children with intrathoracic tuberculosis

We read with great interest the recent article by Khandelwal et al1. In this excellent study, the authors investigated the baseline 25-hydroxy vitamin D levels in children suffering from intrathoracic tuberculosis and its association with type and outcome of tuberculosis. They concluded that type of intrathoracic tuberculosis or outcome was not affected by 25-hydroxy vitamin D levels in these children. However, children who did not demonstrate sputum conversion after intensive phase of antituberculosis therapy (ATT) had lower baseline 25-hydroxy vitamin D levels as compared to those who did. We appreciate and congratulate the authors for having addressed such an important issue. However, we have some concerns regarding this report, which we would like to share with you.