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Related Experiment Videos

Varicella.

Ulrich Heininger1, Jane F Seward

  • 1Division of Paediatric Infectious Diseases and Vaccinology, University Children's Hospital, Basel, Switzerland. Ulrich.Heininger@unibas.ch

Lancet (London, England)
|October 19, 2006
PubMed
Summary
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Varicella-zoster virus causes chickenpox and shingles. Vaccination is highly effective, preventing severe disease and reducing incidence, complications, and deaths, demonstrating herd immunity.

Area of Science:

  • Virology
  • Immunology
  • Public Health

Background:

  • Varicella-zoster virus causes varicella (chickenpox) and herpes zoster (shingles).
  • Varicella presents with a vesicular rash, primarily in children, but can affect all ages.
  • Severe cases can lead to serious complications, including CNS involvement, pneumonia, and death.

Purpose of the Study:

  • To review the epidemiology and prevention of varicella-zoster virus infections.
  • To highlight the efficacy of varicella vaccination in preventing disease and complications.
  • To discuss the impact of vaccination programs on public health and herd immunity.

Main Methods:

  • Literature review of varicella-zoster virus, varicella, and herpes zoster.
  • Analysis of varicella vaccine efficacy data.

Related Experiment Videos

  • Examination of public health outcomes from childhood immunization programs.

    • Main Results:

    • Varicella vaccination is 80-85% effective against all disease and >95% effective against severe disease.
    • US childhood immunization programs have significantly reduced varicella incidence, complications, hospitalizations, and deaths.
    • Strong herd immunity has been observed, protecting the general population.

    Conclusions:

    • Varicella vaccination is a safe and effective method for preventing varicella and herpes zoster.
    • Widespread immunization programs lead to substantial public health benefits, including reduced disease burden and mortality.
    • The success of vaccination programs underscores the importance of herd immunity in controlling viral infections.