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Related Concept Videos

Vaccinations01:51

Vaccinations

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Overview
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Vaccines01:21

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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...
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Cancer Vaccines01:30

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Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
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Microorganisms in Medicine and Therapeutics01:29

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Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
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Vaccine Production01:23

Vaccine Production

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Vaccine production involves a sequence of upstream and downstream processes to generate a safe and effective immunological product. It begins with cultivating microorganisms, such as viruses or bacteria, to obtain antigenic material. For viral vaccines, mammalian host cells are grown in bioreactors and subsequently infected with the target virus. The virus replicates within the host cells, which are lysed to release viral particles. This lysate is then clarified through filtration or...
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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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Informing quarantine policy for measles control in primary school and daycare settings: insights from a simulation study, Flanders, Belgium.

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Do vaccines save lives? Yes they do!

Tinne Lernout1, Heidi Theeten1, Elke Leuridan1

  • 1Centre for the Evaluation of Vaccination. Vaccine and Infectious Disease Institute. University of Antwerp. Antwerp. Belgium.. tinne.lernout@uantwerpen.be.

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Vaccines significantly reduce disease and death, with impacts varying by illness and region. Optimizing vaccine use and maintaining public trust are crucial for global health.

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Area of Science:

  • Immunology
  • Public Health
  • Epidemiology

Background:

  • Vaccines have historically been highly effective in reducing disease morbidity and mortality.
  • The measurable impact of vaccines on mortality varies, with some effects being immediate (e.g., measles) and others long-term (e.g., hepatitis B).
  • In high-income nations, vaccine impact is often assessed by reduced disease incidence and hospitalizations rather than direct mortality reduction.

Purpose of the Study:

  • To review the diverse impacts of vaccination programs on public health.
  • To highlight the challenges in measuring and realizing the full potential of vaccines.
  • To emphasize the importance of trust and adaptability in vaccination strategies.

Main Methods:

  • Review of existing literature on vaccine efficacy and impact.
  • Analysis of disease-specific mortality and morbidity data in relation to vaccination.
  • Examination of factors influencing vaccine program success, including accessibility and public perception.

Main Results:

  • Vaccination demonstrates success in reducing disease burden at individual and population levels through herd immunity.
  • Delayed mortality benefits are observed for certain vaccines, requiring long-term evaluation.
  • Significant mortality from diseases like invasive pneumococcal disease and rotavirus could be averted in low-resource settings through improved vaccine access.

Conclusions:

  • Vaccines are a cornerstone of public health, with profound effects on disease prevention.
  • Optimal vaccine utilization, particularly in resource-limited regions, holds immense potential for saving lives.
  • Sustaining public trust and adapting immunization schedules to evolving epidemiological patterns are critical for future vaccination success.