Vaccination

• What is the primary purpose of vaccination?

  To prevent illness in an individual.
• How does vaccination contribute to public health?

  It prevents the spread of pathogens in a population.
• What role do white blood cells play in the immune response?

  They produce antibodies against pathogens.
• What is the function of antibodies in the immune system?

  They stick to pathogens and trigger their destruction.
• How do vaccines work to prevent illness?

  • Introduce dead or inactive forms of pathogens
  • Stimulate white blood cells to produce antibodies
  • White blood cells divide by mitosis to create copies
  • Memory cells remain in the blood for decades
  • Quick antibody production upon re-exposure to the pathogen
• What is the significance of using dead or inactive pathogens in vaccines?

  They cannot lead to disease in the patient.
• What happens to white blood cells after vaccination?

  They divide by mitosis and produce copies that can remain in the blood.
• How do vaccines provide long-term protection against pathogens?

  They enable quick production of antibodies if the same pathogen enters the body later.
• What is herd immunity and why is it important?

  • Protection of unvaccinated individuals
  • Achieved when a large number of people are vaccinated
  • Reduces the spread of disease within the community
• What is the consequence of having a large number of vaccinated individuals in a population?

  It protects unvaccinated individuals from disease.
• Who might be at risk of not being vaccinated?

  People new to a country or those who missed vaccination appointments.