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Related Concept Videos

Vaccinations01:51

Vaccinations

Overview
Immunological Memory01:23

Immunological Memory

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 is...
Active versus Passive Immunity01:31

Active versus Passive Immunity

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.
Active Immunity
Active immunity refers to the resistance one develops...
Development of Immunocompetence01:22

Development of Immunocompetence

The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
Vaccines01:21

Vaccines

Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the type of...

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Related Experiment Video

Updated: May 11, 2026

Intralymphatic Immunotherapy and Vaccination in Mice
07:33

Intralymphatic Immunotherapy and Vaccination in Mice

Published on: February 2, 2014

Adult immunizations

P Gardner1, T Eickhoff, G A Poland

  • 1State University of New York at Stony Brook, USA.

Annals of Internal Medicine
|January 1, 1996
PubMed
Summary
This summary is machine-generated.

New vaccines for hepatitis A, varicella, and typhoid are now available. Adults aged 50 and older should review preventive health, including pneumococcal and annual influenza immunizations.

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Area of Science:

  • Immunology
  • Vaccinology
  • Preventive Medicine

Background:

  • Recent licensing of new vaccines for hepatitis A, varicella, and typhoid.
  • Established national policy recommends preventive health reviews at age 50.
  • Growing need for updated adult immunization strategies.

Purpose of the Study:

  • To review newly licensed vaccines for hepatitis A, varicella, and typhoid.
  • To discuss their recommended use in adult populations.
  • To highlight the importance of preventive health reviews at age 50, focusing on specific vaccine needs.

Main Methods:

  • Literature review of new vaccine approvals and guidelines.
  • Analysis of national policy on preventive health measures for adults.
  • Evaluation of risk factors influencing vaccine recommendations.

Main Results:

  • New vaccines for hepatitis A, varicella, and typhoid are available for adult use.
  • Age 50 is identified as a key point for reassessing preventive health needs.
  • Emphasis on pneumococcal vaccination and annual influenza immunization for adults.

Conclusions:

  • Adults should be aware of newly available vaccines for hepatitis A, varicella, and typhoid.
  • Regular health reviews at age 50 are crucial for timely immunization.
  • Targeted vaccination strategies, including pneumococcal and influenza vaccines, are essential for adult preventive care.