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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...
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Pulmonary Tuberculosis III01:31

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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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Pulmonary Tuberculosis V01:28

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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

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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 II01:28

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

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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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Intratracheal Inoculation of Fischer 344 Rats with Francisella tularensis
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Tularemia From Veterinary Occupational Exposure.

Grace E Marx1, Emily Curren2, Marisa Olesen3

  • 1Centers for Disease Control and Prevention, Division of Vector-Borne Diseases, Fort Collins, Colorado, USA.

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|January 31, 2024
PubMed
Summary

Tularemia, a bacterial disease, can spread from animals to humans. A veterinarian contracted tularemia from a dog, highlighting the occupational risk. While transmission is possible, using personal protective equipment (PPE) can minimize this risk for veterinary staff.

Keywords:
Francisella tularensisoccupational risktularemiaveterinaryzoonoses

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Area of Science:

  • Veterinary Medicine
  • Infectious Diseases
  • Zoonotic Infections

Background:

  • Tularemia is a zoonotic disease caused by Francisella tularensis.
  • Veterinary personnel face occupational risks due to potential F. tularensis transmission from animals.
  • Understanding transmission routes is crucial for preventing tularemia in veterinary settings.

Purpose of the Study:

  • To report a case of tularemia in a veterinarian following a needlestick injury.
  • To systematically assess the occupational transmission risk of F. tularensis in veterinary clinical staff.
  • To evaluate the effectiveness of personal protective equipment (PPE) in preventing tularemia transmission.

Main Methods:

  • Case report of a veterinarian with tularemia after exposure to a sick dog.
  • Survey of veterinary clinical staff with occupational exposure to animals confirmed with F. tularensis.
  • Defined high-risk exposure criteria including direct contact with bodily fluids or aerosol inhalation without PPE.

Main Results:

  • A veterinarian developed ulceroglandular tularemia after a needlestick injury but recovered with treatment.
  • Survey data from 20 occupational exposures showed veterinarians were most frequently exposed (40%).
  • Exposures involved cats most often (80%), with standard PPE used in only 20% of cases; 7 exposures were high-risk.

Conclusions:

  • Transmission of F. tularensis in veterinary settings is possible, though the overall risk appears low.
  • Adherence to standard PPE and environmental precautions is recommended for veterinary staff handling sick animals.
  • Postexposure prophylaxis should be considered for high-risk exposures to prevent tularemia.