Vaccines: Technological Platforms, Mission Indradhanush & eVIN Logistics

UPSC Mains PYQs

Vaccine Diplomacy & Technologies (2020): Explain the different technological platforms used in developing COVID-19 vaccines. Evaluate the role of India's 'Vaccine Maitri' initiative in providing affordable immunization access to the Global South. (15 Marks, 250 Words)

📊 High-Yield Data & Statistical Fact Sheet

Vaccines & Immunization Metrics:
- Global Footprint: India manufactures 60% of all vaccines supplied globally, serving as the chief supplier for UNICEF, GAVI, and PAHO.
- Mission Indradhanush: Immunized 5.46 Crore children and 1.32 Crore pregnant women, raising full immunization coverage to 93.8% in targeted districts.
- Cervical Cancer Burden: Cervical cancer kills ~75,000 Indian women annually (1 death every 7 minutes). Indigenous CERVAVAC costs ₹200 to ₹400/dose (vs. Gardasil at ₹3,000+).
- First Plasmid DNA: India's ZyCoV-D is the world's first approved plasmid-DNA vaccine for human use, delivered via a needle-free applicator.
- Cold Chain Assets: Over 29,000 cold chain points monitored in real-time by the eVIN (Electronic Vaccine Intelligence Network) cloud platform.
- UIP Pathogens: Protects against 12 vaccine-preventable diseases nationally.

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1. VACCINE PLATFORMS: mRNA, VECTOR, INACTIVATED & DNA

Active Vaccine Technologies:
- mRNA (e.g., Pfizer/Moderna): Delivers a synthetic messenger RNA sequence that instructs host cells to manufacture the pathogen's spike protein, triggering an antibody response. Requires ultra-cold storage.
- Viral Vector (e.g., Covishield/Sputnik): Uses a modified, non-replicating adenovirus to carry the genetic blueprint of the pathogen's target protein into cells.
- Inactivated (e.g., Covaxin): Uses a chemically killed pathogen that cannot replicate but still displays antigens to activate the immune system.
- Plasmid DNA (e.g., ZyCoV-D): India's world-first human DNA vaccine. Delivers a engineered DNA plasmid into skin cells, which is transcribed to produce target antigens.
- Intranasal Mucosal (e.g., iNCOVACC): A needle-free nasal spray vaccine that stimulates localized IgA mucosal antibodies in the upper respiratory tract to block transmission routes.

Universal Immunization Program (UIP): A key public health program providing free vaccination against 12 diseases: TB, Diphtheria, Pertussis, Tetanus, Polio, Hepatitis B, Pneumonia, Meningitis, Measles, Rubella, Japanese Encephalitis, and Rotavirus.
Mission Indradhanush: A targeted drive focusing on low-coverage districts to immunize unvaccinated children and pregnant women, raising national coverage to 93.8%.
CERVAVAC (Indigenous HPV Vaccine): Indigenously developed quadrivalent Human Papillomavirus (HPV) vaccine. Addresses India's high cervical cancer burden by offering protection at 10x lower cost than imported options.

eVIN (Electronic Vaccine Intelligence Network):
- System: A digital platform that tracks vaccine logistics in real-time across 29,000 cold chain points.
- Mechanism: Uses IoT-enabled temperature loggers inside vaccine refrigerators to send instant SMS alerts during temperature drops, preventing stock wastage.
Vaccine Maitri Initiative: A soft-power diplomacy initiative that exported millions of domestically manufactured vaccines to neighboring countries and developing nations across the Global South.

Global Vaccine Supply Share: 60% manufactured in India.
World's First Human DNA Vaccine: ZyCoV-D (Zydus Cadila).
Intranasal Mucosal Vaccine: iNCOVACC.
Indigenously Developed HPV Vaccine: CERVAVAC (Cervical Cancer).
Real-Time Cold Chain Monitor: eVIN (Electronic Vaccine Intelligence Network).
Target vaccine-preventable diseases: 12 Pathogens under UIP.
District Coverage Booster Drive: Mission Indradhanush.
Vaccine Soft-Power Outreach: Vaccine Maitri.

Notes updated up to March 2026. Sources: Ministry of Health UIP updates, WHO Vaccine Reports.