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Summary
This study on 350 children with occult tuberculosis infection found Mycobacterium tuberculosis in 8.5% of gastric aspirates. Treatment with two drugs over 12-18 months was administered, with chest X-rays showing calcification in 20.8% of cases.
Area of Science:
- Pediatric Infectious Diseases
- Microbiology
- Public Health
Background:
- Occult tuberculous infection presents diagnostic challenges in children.
- Early identification and treatment are crucial to prevent disease progression.
Purpose of the Study:
- To evaluate the diagnostic yield of gastric aspirates for Mycobacterium tuberculosis in children with occult tuberculous infection.
- To assess the long-term radiological outcomes and treatment strategies for these children.
Main Methods:
- Review of 350 New Zealand children diagnosed with occult tuberculous infection.
- Collection and culture of three gastric aspirates per child for Mycobacterium tuberculosis and Mycobacterium bovis.
- Follow-up chest X-rays to monitor for calcification over 2-5 years.
- Treatment regimens included isoniazid with PAS or rifampicin for 12 or 18 months.
Main Results:
- Mycobacterium tuberculosis was isolated from 8.5% of gastric aspirates; the rate was 10.9% in BCG-naive children.
- Mycobacterium bovis was not detected in any samples.
- Chest X-rays revealed calcification in 20.8% of cases initially showing normal results.
Conclusions:
- Gastric aspiration is a valuable diagnostic tool for occult tuberculosis in children.
- Long-term radiological follow-up is important to detect sequelae.
- Effective two-drug regimens are essential for managing pediatric tuberculous infection.