QUESTION 16
GS3
15 marks
What is the basic principle behind vaccine development? How do vaccines work? What approaches were adopted by the Indian vaccine manufacturers to produce COVID-19 vaccines?
WRITE IN
11 min
250 words
What the examiner wants
Explain the principle behind vaccines, how they work, and the approaches used by Indian makers of COVID-19 vaccines.
ExplainMake clear how and why it happens: causes, process, and an example for each point.
Demand-wise check
- 1Principle: train the immune system with an antigen without causing disease≈65 words
- 2How they work: antibodies and memory B and T cells≈65 words
- 3Indian approaches: Covishield (viral vector), Covaxin (inactivated), ZyCoV-D (DNA), Corbevax (protein subunit), GEMCOVAC (mRNA)≈65 words
Open in about 30 words and close in about 30.
Answer plan
PrincipleMechanismIndian platformsConclusion
Where marks usually go
- Missing one of the three parts
- Not naming platforms
Draw this
- Table: vaccine → maker → platform
Value addition
- FactZyCoV-D was the world's first DNA vaccine approved for human use (2021).Zydus / DCGI
- FactCovaxin was developed by Bharat Biotech with ICMR-NIV.ICMR
Mapped topper copies
Reviewed public-source references related to this PYQ. Same-syllabus references are labelled separately.
- Shakti Dubey · AIR 1 · Page 38 ↗Same syllabus reference
- Aniket Ranjan · AIR 48 · Page 11 ↗Same syllabus reference
- Mayank Purohit · AIR 33 · Page 9 ↗Same syllabus reference
- Aniket Ranjan · AIR 48 · Page 38 ↗Same syllabus reference
Links open original public sources. MainsBuddy does not host these answer sheets.
Next: plan for one minute, write it in 11 minutes, then get it checked.