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Related Concept Videos

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:
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...
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.

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Related Experiment Video

Updated: May 12, 2026

Development of a Preclinical Inhalation Model to Test Vaporized Cannabis Distillates
06:09

Development of a Preclinical Inhalation Model to Test Vaporized Cannabis Distillates

Published on: May 30, 2025

Marijuana 'bong' smoking and tuberculosis.

K Thu1, M Hayes, S Miles

  • 1Department of General Medicine, Calvary Mater Newcastle, Newcastle, New South Wales, Australia. kmthu@yahoo.com

Internal Medicine Journal
|April 5, 2013
PubMed
Summary

Tuberculosis transmission risk increases sixfold when sharing marijuana smoking devices. This study highlights marijuana use as a potential risk factor for cavitating tuberculosis in young Australians.

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Area of Science:

  • Public Health
  • Infectious Diseases
  • Epidemiology

Background:

  • Tuberculosis (TB) incidence is typically low in non-indigenous Australian populations.
  • Cavitating TB, a severe form of the disease, presents unique transmission challenges.

Observation:

  • Three cases of cavitating TB were identified in young, non-indigenous Australians.
  • These cases were linked to a shared habit of smoking marijuana via makeshift pipes or bongs.

Findings:

  • A significant association was found between sharing a bong and TB transmission.
  • Sharing a bong with an index case demonstrated a sixfold increased risk of transmission (OR 6.5, P=0.016).
  • 34 positive TB contacts were identified among the cases studied.

Implications:

  • Marijuana use, particularly sharing smoking devices, should be considered a potential risk factor for cavitating TB.
  • Public health strategies may need to address substance use in TB prevention and control among vulnerable populations.
  • Further research is warranted to elucidate the mechanisms of increased transmission risk.