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Updated: Aug 16, 2026

A 3D Human Lung Tissue Model for Functional Studies on Mycobacterium tuberculosis Infection
Published on: October 5, 2015
[Pulmonary tuberculosis in infants. Apropos of 6 cases]
J C Dubus1, R Piarroux, M Panuel
1Service de médecine infantile, CHU Timone-Enfants, Marseille, France.
Insights
Pediatric tuberculosis is increasingly diagnosed, often linked to adult contacts or delayed BCG vaccination. Early BCG vaccination for newborns is recommended to prevent childhood tuberculosis.
Area of Science:
- Pediatrics
- Infectious Diseases
- Immunology
Background:
- Rising incidence of pediatric tuberculosis necessitates understanding transmission routes.
- Late or absent Bacillus Calmette-Guérin (BCG) vaccination is a potential factor in childhood tuberculosis.
- Contact with infected adults is a primary driver for tuberculosis in children.
Observation:
- A study involved six infants (3-18 months) admitted between November 1990 and May 1992.
- Tuberculosis diagnosis was confirmed via tuberculin testing and radiographic evidence of mediastinal lymph node enlargement and consolidation.
- Mycobacterium tuberculosis was identified in two infant cases, with 11 contacts also diagnosed with tuberculosis.
Findings:
- Pediatric tuberculosis presents with diverse symptoms and requires comprehensive diagnostic approaches.
- Treatment involved multi-drug regimens (isoniazid, rifampin, ethambutol, pyrazinamide) for 2-4 months, followed by two drugs for a mean total of 13 months.
- Corticosteroids were an adjunct therapy in five patients, with treatment efficacy monitored by CT scans.
Implications:
- Tuberculosis in children is more prevalent than often assumed.
- Routine BCG vaccination for neonates should be strongly considered to mitigate the risk of childhood tuberculosis.
- Early diagnosis and appropriate multi-drug therapy are crucial for managing pediatric tuberculosis.
Background:
The present increased incidence of tuberculosis in children can be explained by contacts with infected adults and/or late BCG vaccination.
Patients:
Six infants, 3 to 18 months-old (mean: 8 months), were admitted from November 1990 to May 1992 for various reasons; only two were admitted with a diagnosis of tuberculosis based on tuberculin test and only one was given a BCG vaccine. The disease produced a broad range of symptoms. Diagnosis was based on tuberculin test and radiographic examination showing lymph node enlargement of mediastinum and segmental consolidation lesions. Mycobacterium tuberculosis was found in two cases. The patients were given isoniazid, rifampin, ethambutol and/or pyrazinamide; corticosteroids were added in five patients. Each patient received four or three drugs for 2-4 months and two drugs (isoniazid plus rifampin) beyond, for a mean total duration of 13 months (range: 9-17 months). Repeated CT scan of thorax was performed to evaluate the efficacy of treatment. Tuberculosis was diagnosed in 11 subjects in contact with these children.
Conclusion:
Tuberculosis in children is not rare, and BCG vaccination of neonates should be seriously considered.
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