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Immunosenescence and infectious diseases.

L Ginaldi1, M F Loreto, M P Corsi

  • 1Department of Internal Medicine and Public Health, University of L'Aquila, S. Sisto 22/E, 67100, L'Aquila, Italy. ginaldi@sgol.it

Microbes and Infection
|October 3, 2001
PubMed
Summary

Aging immune systems increase elderly susceptibility to infections and reduce vaccine effectiveness. This review covers age-related immune impairments contributing to higher infectious disease rates in older adults.

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Area of Science:

  • Gerontology
  • Immunology
  • Infectious Diseases

Background:

  • Infectious diseases and malignancies are leading causes of death and illness in the elderly.
  • Aging is associated with immune system dysfunction, increasing infection risk.
  • Age-related immune changes can lead to inadequate responses to vaccinations.

Purpose of the Study:

  • To review the impact of aging on the immune system.
  • To discuss how immune system impairments in the elderly contribute to infectious diseases.
  • To explore the relationship between aging, immunity, and vaccine response.

Main Methods:

  • Review of scientific literature on aging and immunity.
  • Analysis of cellular, humoral, and innate immune functions in the elderly.

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  • Examination of factors contributing to increased infection incidence in older adults.

    • Main Results:

    • The aging immune system exhibits functional impairments across cellular, humoral, and innate components.
    • These immune deficits heighten susceptibility to various infections in the elderly population.
    • Dysfunctional immunity in aging individuals compromises vaccine efficacy.

    Conclusions:

    • Age-related immune decline is a significant factor in the increased burden of infectious diseases among the elderly.
    • Understanding these immunologic changes is crucial for developing strategies to prevent and treat infections in older adults.
    • Targeting age-related immune dysfunction may improve vaccine effectiveness and reduce morbidity and mortality in the elderly.