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Related Concept Videos

Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

302
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...
302

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Ferrets as a model for tuberculosis transmission.

Tuhina Gupta1, Naveen Somanna2, Thomas Rowe1,3

  • 1Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States.

Frontiers in Cellular and Infection Microbiology
|September 2, 2022
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Summary
This summary is machine-generated.

Tuberculosis (TB) remains a major global health threat. This study shows ferrets can model TB transmission, developing symptoms and infecting others, supporting vaccine development.

Keywords:
animal modelferretmycobacteriumtransmissiontuberculosis

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Area of Science:

  • Infectious Diseases
  • Animal Models
  • Tuberculosis Research

Background:

  • Tuberculosis (TB) remains a significant cause of mortality worldwide, necessitating research into transmission dynamics.
  • Understanding person-to-person transmission is crucial for developing effective vaccines and therapies against Mycobacterium tuberculosis.
  • Ferrets have proven valuable in modeling other respiratory pathogens, making them a potential model for TB.

Purpose of the Study:

  • To evaluate the ferret as a model for Mycobacterium tuberculosis infection and transmission.
  • To characterize the clinical and pathological outcomes of M. tuberculosis infection in ferrets.
  • To assess the potential for natural transmission of M. tuberculosis between ferrets.

Main Methods:

  • Ferrets were intratracheally infected with varying doses of M. tuberculosis.
  • Clinical signs, weight loss, and pathological features were monitored.
  • Transmission was assessed by co-housing infected ferrets with naïve sentinels and analyzing nasal washes and disease development.

Main Results:

  • Ferrets infected with high doses of M. tuberculosis developed acute disease signs and pathology similar to larger animals.
  • Severe signs, including up to 30% weight loss, were observed within 2-4 weeks with very-high doses.
  • Acutely infected ferrets transmitted M. tuberculosis to co-housed sentinels, some of whom developed variable disease symptoms.

Conclusions:

  • The ferret model effectively replicates key aspects of M. tuberculosis infection and transmission.
  • This model system shows promise for studying TB pathogenesis and evaluating transmission-blocking interventions.
  • Further research using this ferret model is warranted for testing TB vaccines and therapies.