Understanding NIH clinical case definitions for pediatric intrathoracic TB by applying them to a clinical trial

Prevention, Diagnosis, and Treatment of Tuberculosis in Children with Human Immunodeficiency Virus

While tuberculosis (TB) is an ancient disease, its global prevalence and concomitant human immunodeficiency virus (HIV)-1 infection have hampered efforts at effectively controlling TB in children in many countries where these 2 pandemics coexist. This review briefly discusses the current status of TB prevention strategies including preventative regimens designed to prevent the progression of latent TB infection to active disease, current recommendations regarding treatment of TB disease, and the problematic nature of diagnosing TB in children living with HIV. Promising recent data regarding novel diagnostic techniques that rely upon detecting Mycobacterium tuberculosis molecular components in blood will be reviewed.

Incident Tuberculosis Diagnoses in Children at High Risk for Disease

We followed 35 children meeting a research definition for unconfirmed tuberculosis (TB) but in whom a pediatric pulmonologist did not diagnose or treat TB. After a median follow-up of 16.4 months, most children were not diagnosed with TB following a comprehensive evaluation. However, 2 were diagnosed with TB, demonstrating high TB risk (6%; exact 95% CI, 1%–19%). In some contexts, researchers may wish to supplement these research definitions with clinical decision data and longitudinal follow-up in order to improve specificity.

Clinical Case Definitions for Classification of Intrathoracic Tuberculosis in Children: An Update

Consensus case definitions for childhood tuberculosis have been proposed by an international expert panel, aiming to standardize the reporting of cases in research focusing on the diagnosis of intrathoracic tuberculosis in children. These definitions are intended for tuberculosis diagnostic evaluation studies of symptomatic children with clinical suspicion of intrathoracic tuberculosis, and were not intended to predefine inclusion criteria into such studies. Feedback from researchers suggested that further clarification was required and that these case definitions could be further improved. Particular concerns were the perceived complexity and overlap of some case definitions, as well as the potential exclusion of children with acute onset of symptoms or less severe disease. The updated case definitions proposed here incorporate a number of key changes that aim to reduce complexity and improve research performance, while maintaining the original focus on symptomatic children suspected of having intrathoracic tuberculosis. The changes proposed should enhance harmonized classification for intrathoracic tuberculosis disease in children across studies, resulting in greater comparability and the much-needed ability to pool study results.