Every six weeks, a frontline health worker in a village primary health centre lays out syringes for an infant's routine visit. Under the current schedule, that baby doesn't get one shot — it gets several, covering different diseases at different angles. Multiply this by almost 26 million Indian babies vaccinated annually under the Universal Immunisation Programme (UIP), and you start to see the operational mountain India's immunisation system quietly climbs, every single day.
A new study wants to change that arithmetic.
One Needle, Six Diseases
The hexavalent vaccine is a six-in-one combination that protects children against diphtheria, tetanus, pertussis, hepatitis B, Haemophilus influenzae type b (Hib), and polio in a single shot. Right now, India's primary immunisation schedule uses a pentavalent vaccine alongside a fractional inactivated polio vaccine (IPV) dose — meaning the polio component is administered separately. The hexavalent formulation folds that extra jab in, collapsing multiple injections into one.
The study was led by Dr. Pawan Kumar and Dr. Kapil Singh from the Ministry of Health and Family Welfare, along with researchers from The George Institute for Global Health India, the Gates Foundation, Gavi The Vaccine Alliance, and John Snow India Private Limited. The findings were published in the peer-reviewed international journal Human Vaccines and Immunotherapeutics.
The Burden Nobody Talks About
The case for the switch isn't just clinical — it's logistical. At present, children receive multiple vaccines during immunisation visits, increasing the number of injections they receive, placing additional demands on caregivers' time, and adding to the workload of healthcare providers. The hexavalent vaccine would reduce the number of injections infants receive, ease the workload of frontline health workers, lower cold-chain requirements, and save caregivers' time.
That cold-chain point deserves attention. Fewer vials mean fewer storage slots, fewer transport requirements, and fewer breakdowns in India's already-stretched vaccine supply chain — particularly in remote and tribal geographies where the last mile is the hardest one.
The findings also noted that caregivers generally prefer fewer injectable vaccines during each visit — a behavioural nudge that could improve compliance and reduce dropout rates in hard-to-reach populations.
The Price Equation
"While the hexavalent vaccine involves higher upfront costs, it generates important efficiencies by reducing injections, easing pressure on frontline workers, lowering cold-chain requirements, and saving caregivers' time," noted Dr. Susmita Chatterjee of The George Institute.
The analysis considered costs from both government and household perspectives — including vaccine procurement, logistics, healthcare worker time, and caregiver time — and identified vaccine pricing as the key determinant of programme costs.
The tipping point is clear: based on historical procurement trends in India, researchers estimated that a 50% reduction in the price of the hexavalent vaccine would allow operational and system-level savings to offset the higher procurement costs. India has form here — it negotiated sharp price reductions on the pentavalent vaccine through Gavi support and domestic manufacturing scale. The hexavalent transition is therefore less a question of whether and more a question of when prices fall into range.
A Programme Ready for Its Next Upgrade
The UIP has made remarkable strides. Full immunisation coverage has risen from 62% in 2015 to 98.4% as of January 2026. That success makes it a strong platform — but also raises the bar. The system now needs to optimise, not just expand. Fewer injections per visit, lighter logistics, and reduced burden on ASHA workers and ANMs are exactly the kind of gains a maturing immunisation programme should be chasing.
The hexavalent vaccine doesn't reimagine child healthcare. It just makes what already works — work better.
Sources
- New study finds hexavalent vaccine could make India’s immunisation programme more efficient - The Tribune
- Hexavalent vaccine could improve efficiency of India's universal immunization programme: Study
- Hexavalent vaccine may streamline immunisation programme - News Today | First with the news
- Hexavalent vaccine to make India's immunisation programme more efficient: Study
- Baby Vaccination Chart in India 2026 – Complete Immunization Schedule (0–5 Years)