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Related Concept Videos

Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
Tuberculosis01:23

Tuberculosis

Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...

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Related Experiment Video

Updated: Jun 17, 2026

A Tuberculosis Molecular Bacterial Load Assay (TB-MBLA)
10:41

A Tuberculosis Molecular Bacterial Load Assay (TB-MBLA)

Published on: April 30, 2020

Experience establishing tuberculosis laboratory capacity in a developing country setting.

C N Paramasivan1, E Lee, K Kao

  • 1Foundation for Innovative New Diagnostics, Geneva CH-1216, Switzerland. cn.paramasivan@fi nddiagnostics.org

The International Journal of Tuberculosis and Lung Disease : the Official Journal of the International Union Against Tuberculosis and Lung Disease
|December 17, 2009
PubMed
Summary
This summary is machine-generated.

Strengthening tuberculosis (TB) laboratory diagnostics in Lesotho, a country with high TB, HIV, and multidrug-resistant TB (MDR-TB) rates, significantly improved case detection and management. This initiative successfully enhanced TB diagnostic capacity using modern technologies.

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Area of Science:

  • Public Health
  • Infectious Disease Diagnostics
  • Laboratory Medicine

Background:

  • Lesotho faces a high prevalence of tuberculosis (TB), co-infection with human immunodeficiency virus (HIV), and a significant burden of multidrug-resistant TB (MDR-TB).
  • Existing laboratory diagnostic capacity for TB was limited in this resource-constrained setting.

Purpose of the Study:

  • To describe the process and outcomes of strengthening laboratory diagnostic services for TB in Lesotho.
  • To assess the feasibility of implementing modern TB diagnostic methods in a resource-limited environment.

Main Methods:

  • A collaborative effort involving international organizations renovated the National TB Reference Laboratory in Lesotho.
  • Services were enhanced, including microscopy, conventional culture, drug susceptibility testing (DST), and the introduction of molecular diagnostic techniques like line-probe assay.
  • A biosafety level three facility and external quality assessment programs were established.

Main Results:

  • The establishment of a biosafety level three facility and external quality assessment program was feasible within four months.
  • Liquid culture, DST, and line-probe assay for rapid MDR-TB detection were successfully implemented.
  • Preliminary diagnostic results were comparable to those from industrialized countries.

Conclusions:

  • Strong political commitment and collaboration enabled the rapid establishment of quality-assured TB diagnostic capacity in a resource-limited setting.
  • The initiative significantly enhanced the detection and management of TB and MDR-TB cases.
  • The experience serves as a model for modernizing laboratory services and translating policy into practice in developing countries.