Immunization Schedule for NEET PG: The Complete Age-Wise Breakdown
By Dr. Utsav Bhattacherjee, MBBS, MBA · 21 Jul 2026 · 2 min read
Last updated: 23 Sept 2026

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Immunization schedule questions test the sequence and timing more than the vaccines themselves — which dose comes at which age, and which vaccine is the odd one out in a described schedule. Organizing the schedule by age window, rather than trying to memorize a flat list, is what makes this stick.
The Standard Schedule, by Age
| Age | Vaccines (as per India’s Universal Immunization Programme) |
|---|---|
| At birth | BCG, OPV-0, Hepatitis B birth dose |
| 6, 10, 14 weeks | DPT, OPV, Hepatitis B, Hib (often as a combination/pentavalent vaccine), IPV |
| 9 months | Measles-Rubella (MR) first dose |
| 16–24 months | DPT booster, OPV booster, MR second dose |
| 5–6 years | DPT second booster |
| 10 and 16 years | Tetanus toxoid (TT) |
Note: national immunization schedules are periodically revised — vaccines like Rotavirus and Pneumococcal Conjugate Vaccine (PCV) have been added to the UIP in recent years in a phased, state-wise manner. Always cross-check the current schedule against the latest official Ministry of Health & Family Welfare notification rather than relying solely on any single source, including this one.
Why BCG Is Given at Birth
BCG protects primarily against severe, disseminated forms of childhood tuberculosis (miliary TB, TB meningitis) rather than reliably preventing pulmonary TB in adulthood — which is exactly why it’s given as early as possible, at birth, rather than later in childhood.
The OPV vs IPV Distinction
Oral Polio Vaccine (OPV) is a live attenuated vaccine given orally, used heavily in India’s Pulse Polio campaigns for its ease of administration and ability to induce intestinal immunity. Inactivated Polio Vaccine (IPV) is given by injection and carries no risk of vaccine-derived poliovirus, which is why global polio eradication strategy has shifted toward incorporating IPV alongside OPV.
Age-sequencing questions like this are exactly what Reflex’s daily TROCAR Pediatrics rounds are built to drill.
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FAQ
Frequently asked questions
The questions aspirants ask most about this topic.
BCG, the zero dose of Oral Polio Vaccine (OPV-0), and the Hepatitis B birth dose.
The first Measles-Rubella (MR) dose is given at 9 months, with a second dose at 16–24 months.
Because its main protective benefit is against severe, disseminated childhood TB (like TB meningitis and miliary TB), which can occur very early in life if the vaccine isn’t given promptly.
OPV is a live, oral vaccine that induces intestinal immunity; IPV is an injectable, inactivated vaccine with no risk of vaccine-derived poliovirus.
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