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Paucibacillary tuberculosis--a retrospective study.

Tapen Dam¹, Mridula Bose

¹Department of Microbiology, VP Chest Institute, Delhi.

Journal of the Indian Medical Association

|October 31, 2002

Summary

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Paucibacillary tuberculosis, often smear-negative but culture-positive, presents treatment challenges. This study found 34.8% of respiratory patients had paucibacillary tuberculosis, particularly those aged 45 and above.

Area of Science:

Pulmonary Medicine
Infectious Diseases
Microbiology

Background:

Paucibacillary tuberculosis (PB-TB) complicates tuberculosis (TB) diagnosis and control.
Effective management requires understanding the prevalence of PB-TB in diverse patient populations.

Purpose of the Study:

To determine the prevalence of paucibacillary tuberculosis among patients with respiratory symptoms.
To analyze demographic factors associated with smear-negative TB cases.

Main Methods:

Retrospective analysis of sputum smear microscopy and culture results from 1992-1998.
Inclusion criteria: patients with respiratory symptoms attending the outpatient department.
Data stratified by age and sex.

Main Results:

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34.8% of cases were classified as paucibacillary (smear-negative, culture-positive).
No significant influence of sex on smear examination results was observed.
Smear-negative cases were more frequent in the age group of 45 years and older (p < 0.05).

Conclusions:

A significant proportion of respiratory patients present with paucibacillary tuberculosis.
Age is a notable factor in the occurrence of smear-negative TB.
Culture examination is crucial for diagnosing paucibacillary tuberculosis.