If you stepped on a rusty nail as a child, your mother would have rushed you to the nearest government hospital for a tetanus injection — or "TT shot" as everyone in India calls it. That needle has been a fixture of Indian healthcare for decades. But on 21 February 2026, India quietly made a historic upgrade: the Health Minister formally replaced the old Tetanus Toxoid (TT) vaccine with a new, indigenously manufactured Td (Tetanus and adult Diphtheria) vaccine, launched at the Central Research Institute in Kasauli, Himachal Pradesh. The change offers every Indian — from adolescents to pregnant women to adults getting a wound booster — protection against two dangerous diseases instead of one. Here is everything you need to know.
What Is the Td Vaccine and How Is It Different from TT?
The Tetanus Toxoid (TT) vaccine, which India has used for decades, protected only against tetanus — a potentially fatal nervous system disease caused by the Clostridium tetani bacterium, best known for causing lockjaw. It offered no coverage against other diseases.
The new Td vaccine contains two components:
- Tetanus toxoid (T): The same tetanus protection as the old TT vaccine
- Adult Diphtheria toxoid (d): Added protection against diphtheria, a serious bacterial throat and airway infection caused by Corynebacterium diphtheriae
The lowercase "d" is deliberate — it indicates a reduced-dose diphtheria antigen, which is appropriate for adolescents and adults (the full-dose "D" is used in children's DTP vaccines). This lower dose still provides robust immunity in adults while minimising side effects.
Why Did India Make the Switch?
The World Health Organisation (WHO) recommended that all countries transition from TT to Td as far back as 2006, with the recommendation reaffirmed in 2017. India, through its National Technical Advisory Group on Immunisation (NTAGI), has been preparing this transition for several years — and the February 2026 launch marks its formal induction into the Universal Immunisation Programme (UIP).
The switch was driven by a troubling trend: diphtheria cases have been rising among older age groups in India. In children, diphtheria is largely controlled through the DTP vaccine included in routine childhood immunisation. But protection from childhood vaccines wanes over time — by adolescence and adulthood, many Indians are no longer adequately protected. The Td vaccine bridges this gap.
Additionally, India's Central Research Institute (CRI) in Kasauli — the same institution that has produced vaccines for India for over a century — now manufactures the Td vaccine indigenously. This aligns with India's push for self-reliance in vaccine production (Atmanirbhar Bharat) and ensures a stable, affordable domestic supply. The first batch of 55 lakh doses was scheduled for supply to the UIP by April 2026.
What Is Diphtheria? Why Does It Matter?
Diphtheria is a bacterial infection that primarily affects the throat and tonsils, producing a thick grey membrane that can block the airway and cause suffocation. It can also release a toxin that damages the heart and nerves. Before vaccines, diphtheria epidemics were devastating — they were a leading killer of children worldwide.
In India, diphtheria remains endemic, with outbreaks reported regularly, particularly in states with lower vaccination coverage. It spreads through respiratory droplets — sneezing and coughing in crowded settings like buses, trains, offices, and schools. Because the childhood DTP vaccine's diphtheria protection wanes after 5–10 years, unvaccinated or under-vaccinated adults are increasingly susceptible, especially in settings with poor ventilation.
Symptoms of diphtheria include:
- Sore throat with a thick, grayish membrane over the tonsils
- Swollen neck glands ("bull neck" appearance)
- Hoarseness or difficulty breathing
- Low-grade fever and fatigue
Diphtheria is a medical emergency and requires immediate hospitalisation, antitoxin administration, and antibiotics. Prevention through the Td vaccine is far safer and simpler.
What Is Tetanus? A Quick Refresher
Tetanus is caused by the Clostridium tetani bacterium, whose spores are widespread in soil, animal faeces, and dust across India. The bacteria enter through wounds — even minor ones like a nail prick, a thorn scratch, or a dog bite. Once inside, the bacteria produce a neurotoxin that causes severe, painful muscle spasms, starting with the jaw (lockjaw), spreading to the rest of the body, and potentially causing fatal respiratory failure.
India continues to report tetanus deaths, particularly in rural areas and among unimmunised adults. Wound management — cleaning the wound and ensuring up-to-date Td vaccination — remains the most effective prevention.
The Td Vaccine Schedule in India
The Td vaccine follows the same schedule as the previous TT vaccine under the UIP. There are two main contexts:
For Pregnant Women (Maternal Immunisation)
This is the most critical use of the vaccine, protecting both the mother and the newborn from tetanus (neonatal tetanus remains a cause of infant mortality in India). The schedule:
| Vaccination Status | Schedule |
|---|---|
| Never vaccinated (or uncertain) | Td-1 as early as possible in pregnancy; Td-2 at least 4 weeks after Td-1 |
| Previously received 1–2 doses | One Td dose in this pregnancy |
| Previously received 3–4 doses | One Td dose in this pregnancy |
| Previously received 5+ doses | No dose needed in this pregnancy |
For Wound Management (Post-Exposure Booster)
If you suffer a wound — especially a deep or contaminated wound — your doctor will assess your vaccination history:
- Clean, minor wound + last booster under 10 years ago: No vaccine needed
- Clean, minor wound + no recent booster: Td booster recommended
- Contaminated/deep wound + last booster under 5 years ago: May need booster
- Contaminated/deep wound + not vaccinated or uncertain: Full course (3 doses at 0, 1, and 6 months)
For Primary Immunisation in Unvaccinated Adolescents and Adults
The complete primary course is 3 doses of Td, given at:
- Dose 1: Day 0
- Dose 2: 4 weeks after Dose 1
- Dose 3: 6 months after Dose 2
This provides long-lasting protection against both tetanus and diphtheria.
Who Should Get the Td Vaccine?
The Td vaccine is recommended for:
- All pregnant women — as part of routine antenatal care (replacing TT)
- All adolescents and adults who have never received a full tetanus-diphtheria primary immunisation series
- Anyone with a wound or injury requiring tetanus prophylaxis
- Healthcare workers, who are at risk from both wound injuries and exposure to diphtheria patients
- Travellers to areas with active diphtheria transmission
Because the vaccine is now part of the UIP, it is available free of charge at all government hospitals, PHCs (Primary Health Centres), and community health centres across India. At private clinics, it typically costs ₹80–₹150 per dose. You can also get it at major hospital chains like Apollo, Fortis, Manipal, and at standalone vaccination clinics in most cities.
Keep a record of your vaccination dates. Upload your vaccination records to MedicalVault, so the dates are always accessible when you visit a new doctor, travel, or take your child for a medical examination — no more hunting through old prescription slips.
How Safe Is the Td Vaccine?
The Td vaccine has an excellent safety record. Over 133 countries were already using Td before India's formal switch. Side effects are typically mild and short-lived:
- Local reactions (most common): Redness, swelling, or pain at the injection site, lasting 1–3 days. Applying a cool compress helps.
- Systemic reactions (uncommon): Mild fever, headache, or fatigue in the 24–48 hours after the shot
- Serious reactions (very rare): Severe allergic reaction (anaphylaxis) within minutes — this is why vaccinations are given in a healthcare setting where you are asked to wait for 15–30 minutes afterwards
The Td vaccine can be safely given alongside other vaccines, and is safe during all trimesters of pregnancy. Tell your doctor about any history of allergic reactions to vaccines before receiving it.
Getting Your Vaccination Status Right
Many Indians are uncertain about their vaccination history — paper records get lost, or vaccines were received in childhood without any formal documentation. Here is a practical approach:
If you are an adult with uncertain vaccination history, the safest approach is to assume you need the full 3-dose primary series. Talk to your family physician, or visit any government PHC where Td vaccination is now available free under the UIP.
If you are pregnant, your antenatal care provider will assess your Td vaccination status at your first visit and schedule doses accordingly. Under the UIP, you should receive Td free at any government maternity clinic.
Given how common it is for Indians to lose track of vaccination records — especially for childhood vaccines, boosters given at different clinics, or vaccinations received during travel — it helps to store records in one accessible place. The family sharing feature in MedicalVault allows you to maintain vaccination records for every member of your family, from grandparents to newborns, in one organised profile.
Tetanus After Animal Bites or Skin Injuries
Animal bites, particularly dog bites, are extremely common in India — India has one of the highest rates of dog bite injuries in the world. Alongside the crucial anti-rabies vaccination course, tetanus prophylaxis (now as Td) must also be assessed after any animal bite or contaminated wound.
After any significant wound or animal bite:
- Wash the wound thoroughly with soap and running water for at least 5–10 minutes
- Apply antiseptic (povidone-iodine/Betadine)
- Go to a hospital or PHC immediately
- Receive the appropriate Td booster or start a primary course if needed
- For animal bites — also receive anti-rabies vaccine as per the AEFI schedule
Do not delay wound care. Tetanus spores can be present in everyday dust and soil — the same soil your children play in.
India's UIP: The Backbone of Immunisation
India's Universal Immunisation Programme is one of the largest public health programmes in the world, reaching over 2.6 crore newborns and 2.9 crore pregnant women annually. The inclusion of Td in the UIP ensures that every Indian — regardless of income, geography, or healthcare access — can benefit from dual tetanus-diphtheria protection at no cost.
For the broader immunisation calendar for children in India, refer to our complete child vaccination schedule guide. For adults, the Td vaccine is now one of the most important vaccines to ensure you are up to date on — alongside the HPV vaccine for women, the annual influenza vaccine, and dengue vaccine where indicated.
Key Takeaways
- India replaced the old TT (Tetanus Toxoid) vaccine with the new Td vaccine in February 2026, offering dual protection against both tetanus and diphtheria — a significant upgrade for public health.
- The Td vaccine is manufactured indigenously at the Central Research Institute (CRI), Kasauli, and is available free of charge under India's Universal Immunisation Programme.
- Diphtheria immunity from childhood vaccines wanes in adulthood — the Td vaccine provides crucial booster protection for adolescents, adults, and pregnant women.
- The Td vaccine follows the same schedule as the old TT vaccine: a 3-dose primary series (0, 1, and 6 months) for unvaccinated adults, and specific doses for pregnant women.
- Side effects are mild and temporary; the vaccine has been in use in 133 countries and has an excellent safety profile.
- After any wound or animal bite, visit a healthcare facility promptly and check your Td vaccination status along with other required prophylaxis.
- Store your vaccination records — and those of your family — on MedicalVault, so you always know where you stand and never miss a booster.