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Related Concept Videos

Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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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...
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Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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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...
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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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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...
220
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

211
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...
211
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

303
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:
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Transmission-based Precautions II: Airborne and Protective Environment01:25

Transmission-based Precautions II: Airborne and Protective Environment

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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
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Community-based active-case finding for tuberculosis: navigating a complex minefield.

Peter MacPherson1,2, Kwame Shanaube3, Mphatso D Phiri4,5

  • 1School of Health and Wellbeing, University of Glasgow, Glasgow, UK. peter.macpherson@glasgow.ac.uk.

BMC Global and Public Health
|December 16, 2024
PubMed
Summary
This summary is machine-generated.

Community-based active case finding (ACF) for tuberculosis (TB) can accelerate TB elimination in high-burden countries. Careful planning is essential to maximize benefits and minimize harms, ensuring ACF complements, not replaces, primary healthcare access.

Keywords:
CommunityHIVPublic healthScreeningTuberculosis

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Area of Science:

  • Public Health
  • Infectious Disease Epidemiology
  • Global Health

Background:

  • Community-based active case finding (ACF) involves screening at-risk populations for tuberculosis (TB), often with health promotion and system strengthening.
  • Updated WHO guidelines conditionally recommend ACF in communities with >0.5% undiagnosed pulmonary TB or structural risk factors.
  • Subclinical TB contributes significantly to transmission; ACF, especially with chest X-rays, may enable earlier diagnosis.

Purpose of the Study:

  • To synthesize evidence and experience from ACF programs.
  • To provide practical guidance for implementing ACF programs.
  • To focus on population selection, screening algorithms, outcome selection, and monitoring and evaluation.

Main Methods:

  • Evidence synthesis and experience review from ACF program implementation.
  • Analysis of factors influencing ACF effectiveness, including screening approach, intensity, and community/health system engagement.
  • Consideration of TB epidemiology shifts (HIV treatment, COVID-19) and the role of subclinical TB.

Main Results:

  • The population-level impact of ACF is mixed, depending heavily on implementation specifics.
  • Effective ACF requires careful consideration of potential benefits and harms to individuals and populations.
  • Successful ACF programs need substantial investment and strategic planning.

Conclusions:

  • Community-based ACF, with meticulous planning and investment, can significantly advance TB elimination efforts in high-burden settings.
  • ACF should not be a substitute for equitable access to primary healthcare services.
  • Optimizing ACF involves strategic selection of target populations, screening methods, and robust monitoring.