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Related Concept Videos

Tuberculosis01:23

Tuberculosis

Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...
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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.
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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
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Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
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Diphtheria is an acute, toxin-mediated infectious disease that primarily affects the upper respiratory tract. It is caused by Corynebacterium diphtheriae, a Gram-positive, pleomorphic rod that lacks spore-forming capability and exhibits a characteristic club-shaped morphology under microscopic examination. While C. diphtheriae can asymptomatically colonize mucosal surfaces, clinical disease manifests only when the bacterial strain is lysogenized by a specific β-corynephage. This phage...

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Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
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Published on: February 22, 2019

[Pertussis: a reemerging infection?].

B Kriz1, K Fabiánová, M Maixnerová

  • 1Státní zdravotní ústav, Praha. bohukriz@szu.cz

Epidemiologie, Mikrobiologie, Imunologie : Casopis Spolecnosti Pro Epidemiologii a Mikrobiologii Ceske Lekarske Spolecnosti J.E. Purkyne
|June 28, 2007
PubMed
Summary

Vaccination significantly reduced pertussis (whooping cough) in the Czech Republic, but Bordetella pertussis continues to circulate. Current vaccines are insufficient to control the disease, necessitating improved surveillance and new vaccine strategies.

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Area of Science:

  • Epidemiology
  • Immunology
  • Public Health

Context:

  • Pertussis (whooping cough) historically caused significant childhood mortality.
  • Vaccination campaigns dramatically reduced pertussis incidence since the 1950s.
  • Despite high vaccination rates, Bordetella pertussis continues to circulate, posing risks to infants.

Purpose:

  • To analyze pertussis incidence and influencing factors in the Czech Republic.
  • To evaluate the impact of vaccination on pertussis morbidity and disease severity.
  • To investigate diagnostic and reporting deficiencies and propose solutions.

Summary:

  • High pertussis morbidity rates have been observed at regular intervals, indicating ongoing circulation of Bordetella pertussis.
  • While vaccination reduced childhood cases, pertussis is increasingly prevalent in older children and adolescents.
  • Current vaccination strategies are inadequate for eliminating pertussis, with a recent neonate death highlighting the risks.

Impact:

  • The study underscores the need for enhanced surveillance and new, more immunogenic pertussis vaccines.
  • Revaccination of older age groups is proposed as a crucial measure to control pertussis.
  • Findings inform public health policy for pertussis prevention and control.