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Related Concept Videos

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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Pulmonary Tuberculosis I01:29

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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.
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Transmission-based Precautions I: Contact, Enteric, and Droplets01:17

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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.
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Pneumonia I: Introduction01:30

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Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
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Infection01:20

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When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
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Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
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Controlled Human Infection with Bordetella pertussis.

H de Graaf1, D Gbesemete1, R C Read2

  • 1Faculty of Medicine and Institute for Life Sciences, University of Southampton, Academic Unit of Clinical Experimental Sciences, NIHR Clinical Research Facility and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, Mailpoint 218, University Hospital Southampton NHS Foundation Trust, Tremona Road, Southampton, SO16 6YD, UK.

Current Topics in Microbiology and Immunology
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PubMed
Summary
This summary is machine-generated.

A new human challenge model safely induces asymptomatic Bordetella pertussis (whooping cough) infection. This model aids in understanding transmission and developing effective pertussis vaccines.

Keywords:
Bordetella pertussisCarriageHuman challengeImmune response

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Area of Science:

  • Microbiology
  • Immunology
  • Vaccinology

Background:

  • Bordetella pertussis causes globally significant vaccine-preventable disease.
  • Asymptomatic human carriage of B. pertussis is a suspected reservoir for transmission.
  • Understanding B. pertussis carriage is crucial for developing new vaccine strategies.

Purpose of the Study:

  • To summarize B. pertussis characteristics relevant to human challenge models.
  • To review historical and current human challenge studies for B. pertussis.
  • To establish a safe and effective human challenge model for B. pertussis research.

Main Methods:

  • Review of historical B. pertussis challenge studies.
  • Establishment of a human challenge model using a wild-type B. pertussis strain.
  • Evaluation of detection methods (nasal wash, swabs) and treatment efficacy (Azithromycin).

Main Results:

  • A wild-type B. pertussis human challenge model was successfully established.
  • Deliberate induction of asymptomatic colonization was safe and immunogenic.
  • Nasal wash proved more sensitive than swabs for B. pertussis detection.
  • Azithromycin effectively cleared B. pertussis carriage.

Conclusions:

  • The developed human challenge model is safe and facilitates B. pertussis research.
  • This model enables investigation of host-pathogen interactions.
  • It will accelerate the development of novel pertussis vaccines.