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Related Concept Videos

Immunological Memory01:23

Immunological Memory

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Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
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Active versus Passive Immunity01:31

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Immunity, along with the ability to limit pathogen growth to prevent significant body tissue damage, can be gained either by (1) actively developing an immune response within the individual after exposure to a pathogen or after getting vaccinated or (2) passively transferring immune components from an immune individual to one who is nonimmune. Both these forms of immunity can be found naturally and in medical practices.
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Active immunity refers to the resistance one develops...
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Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Related Experiment Video

Updated: Sep 28, 2025

Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle
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Application of Long-term cultured Interferon-γ Enzyme-linked Immunospot Assay for Assessing Effector and Memory T Cell Responses in Cattle

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[Vaccinations for the immunologic memory-Repeatedly or once only?]

Clara Lehmann1

  • 1Klinische Infektiologie, Innere Medizin I, Uniklinik Köln, Kerpenerstr. 62, 50937, Köln, Deutschland. clara.lehmann@uk-koeln.de.

Der Internist
|April 4, 2022
PubMed
Summary
This summary is machine-generated.

Vaccine effectiveness is threatened by declining vaccination rates. This review explores vaccine-induced immunity, herd immunity, and factors influencing vaccine success, advocating for a vaccination renaissance.

Keywords:
Immunity, herdImmunization, activeImmunization, passiveImmunodeficiencyImmunologic memory

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Area of Science:

  • Immunology
  • Public Health
  • Vaccinology

Background:

  • Vaccine success has led to decreased perceived risk, resulting in lower vaccination rates.
  • Declining immunization coverage poses a significant threat to the control of infectious diseases.
  • The World Health Organization identified vaccine hesitancy as a major global health risk.

Purpose of the Study:

  • To discuss critical aspects of vaccines and vaccination.
  • To explore the interplay between vaccines and the immune system.
  • To highlight the importance of maintaining high vaccination rates.

Main Methods:

  • Review of scientific literature on immunology and vaccinology.
  • Discussion of natural versus vaccine-acquired immunity.
  • Analysis of factors influencing vaccine effectiveness and public health impact.

Main Results:

  • Vaccination provides immunity comparable to natural infection but with reduced risk.
  • Herd immunity is crucial for protecting vulnerable populations and disease eradication.
  • Immunologic memory, T cell responses, and refresher vaccinations are key to sustained protection.

Conclusions:

  • Maintaining adequate vaccination rates is essential to prevent the resurgence of infectious diseases.
  • Understanding the immune mechanisms behind vaccination reinforces its public health value.
  • A renewed focus on vaccination is critical, especially in light of global health challenges like the COVID-19 pandemic.