Vaccination and Immunisation - Unsolved Practice Set
Chapter: Human Health and Disease | Topic: Vaccination and Immunisation
VACCINATION AND IMMUNISATION - UNSOLVED PRACTICE SET
Topic: Vaccination and Immunisation
Multiple Choice Questions
Q1. Vaccination works on the principle of:
- Directly killing pathogens in the body using drugs
- Introducing antigenic material to stimulate the immune system to produce memory cells and antibodies
- Removing the need for an immune system entirely
- Only providing symptomatic relief
Q2. A vaccine may contain which of the following forms of a pathogen or its components?
- Live, fully virulent pathogens only
- Weakened (attenuated) or inactivated pathogens, or specific antigenic proteins
- No biological material at all
- Only antibodies against the pathogen
Q3. The concept where a large proportion of a vaccinated population indirectly protects even unvaccinated individuals by reducing disease spread is called:
- Passive immunity
- Herd immunity
- Innate immunity
- Autoimmunity
Q4. India's National Immunisation Programme primarily aims to:
- Eliminate the need for hospitals
- Provide protection against several preventable diseases in children through timely vaccination
- Replace all other public health measures
- Only target adult populations
Q5. Vaccination is generally considered a form of:
- Passive immunity
- Artificially acquired active immunity
- Naturally acquired passive immunity
- Innate immunity
Short Answer Questions
Q6. Explain the basic principle behind how vaccination provides long-term protection against a disease.
Q7. What is herd immunity, and why is it important for protecting vulnerable individuals who cannot be vaccinated?
Q8. Name any two diseases against which children are commonly vaccinated in India.
Q9. Why does a vaccinated person typically not develop the full-blown disease, even though the vaccine contains material derived from the pathogen?
Long Answer Questions
Q10. Describe how vaccines work at the immunological level, explaining how they stimulate active immunity without causing the actual disease.
Q11. Discuss the importance of immunisation programmes, such as India's National Immunisation Programme, in controlling and preventing infectious diseases at a population level.
APPLICATION / ANALYSIS
Q12. In a school where the vast majority of students have been vaccinated against measles, a few unvaccinated students remain largely protected from an outbreak due to the low circulation of the virus in the school community. Explain this outcome using the concept of herd immunity.
Q13. A public health official is trying to convince hesitant parents in a community to vaccinate their children. Using your understanding of vaccination and herd immunity, explain what risks could arise for the wider community if vaccination rates drop significantly below the required threshold.