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Related Concept Videos

Respiratory Syncytial Virus Disease01:29

Respiratory Syncytial Virus Disease

Human respiratory syncytial virus (RSV) is a widespread pathogen that primarily targets infants and young children but also poses a serious health risk to elderly and immunocompromised individuals. Belonging to the Pneumoviridae family, RSV is a negative-sense, single-stranded RNA virus within the Pneumovirus genus. Its global health burden is significant, with millions of cases annually resulting in hospitalizations and mortality, particularly in resource-limited settings. Although most...
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Diphtheria

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...
Poliomyelitis01:17

Poliomyelitis

Poliomyelitis is caused by poliovirus, a small, non-enveloped, positive-sense RNA virus of the Picornaviridae family and Enterovirus genus. Transmission occurs primarily via the fecal-oral route, often through ingestion of contaminated water or food. The virus initially replicates in the oropharynx and intestinal mucosa, particularly in lymphoid tissues such as the tonsils, Peyer’s patches, and regional lymph nodes. Primary viremia follows, allowing dissemination throughout the body.In most...
Pneumonia V: Nursing management and Prevention01:30

Pneumonia V: Nursing management and Prevention

Nursing management of pneumonia involves promoting airway patency, facilitating rest and conserving energy, encouraging fluid intake, maintaining nutrition, and educating patients.
The nurse must practice strict medical asepsis and adhere to infection control guidelines to minimize healthcare-associated infections.
Enhance airway patency
Position the patient correctly to facilitate drainage of the affected lung segments. Manual or mechanical percussion and vibration can also be employed.
Vaccinations01:51

Vaccinations

Overview
Smallpox01:24

Smallpox

Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.

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Related Experiment Video

Updated: Jun 16, 2026

Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
08:52

Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice

Published on: February 22, 2019

Update on pertussis in children.

Ulrich Heininger1

  • 1University Children's Hospital (UKBB), PO Box, CH-4005 Basel, Switzerland. ulrich.heininger@ukbb.ch

Expert Review of Anti-Infective Therapy
|January 30, 2010
PubMed
Summary
This summary is machine-generated.

Pertussis, or whooping cough, remains endemic globally despite childhood immunizations. Expanding vaccination to adolescents and adults is crucial for preventing this serious respiratory infection, as adults are the main reservoir.

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Area of Science:

  • Infectious Diseases
  • Bacteriology
  • Immunology

Background:

  • Pertussis (whooping cough) is a significant respiratory tract infection caused by Bordetella pertussis.
  • Contrary to common belief, pertussis affects all age groups, posing the greatest risk to young infants.
  • Adults serve as the primary reservoir for B. pertussis, contributing to its endemic status worldwide.

Purpose of the Study:

  • To highlight the persistent global prevalence of pertussis.
  • To emphasize the limitations of current pediatric-focused immunization programs.
  • To advocate for expanded pertussis immunization strategies.

Main Methods:

  • Review of pertussis epidemiology and transmission dynamics.
  • Analysis of factors contributing to waning immunity.
  • Assessment of current treatment and prevention strategies.

Main Results:

  • Pertussis persists globally due to incomplete and waning immunity from infection and vaccination.
  • Adults are the main reservoir, spreading B. pertussis to vulnerable populations.
  • Clinical manifestations of pertussis vary widely based on inoculum, age, and immune status.

Conclusions:

  • Antibacterial treatment for pertussis is often ineffective due to late diagnosis.
  • Prevention through immunization is paramount.
  • Routine immunization programs must be extended to adolescents and adults to control pertussis spread.