3 September 2026

Universal vaccine research for pneumonia and meningitis

The topic discusses advancements in biotechnology and vaccine development which serves as useful context for questions on public health and scientific innovation in the GS3 syllabus.

Questions

1. Explain the concept of 'reverse vaccinology' and discuss its potential in overcoming the limitations of traditional vaccine development for complex pathogens like S. pneumoniae. 150 words
   Attempt this — 150 words in 8 min

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2. The emergence of vaccine-resistant and antibiotic-resistant bacterial strains poses a significant challenge to public health. In this context, discuss the need for universal vaccines and the scientific hurdles involved in developing a single-shot solution for pneumococcal diseases. 250 words
   Attempt this — 250 words in 11 min

   0 / 250 words 11:00 Reset

Prelims

1. What is the primary advantage of 'reverse vaccinology' over traditional vaccine development methods?

   1. A It uses only human-derived proteins to ensure safety.
   2. B It relies entirely on clinical trials rather than laboratory analysis.
   3. C It eliminates the need to culture germs in large bioreactors.
   4. D It guarantees 100% immunity against all viral infections.

2. Why do current pneumococcal conjugate vaccines (PCVs) sometimes become less effective over time?

   1. A The carrier proteins used in PCVs are incompatible with human biology.
   2. B The bacteria mutate to become invisible to the immune system.
   3. C The vaccines contain toxic substances that weaken the immune system.
   4. D Non-vaccine serotypes multiply and replace the targeted serotypes.