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Rabies After a Dog Bite: PEP, Vaccines & NCDC Schedule | RxMedCalc

Everything you need to know after an animal bite — exposure categories, first aid, the 4-dose ARV schedule, RIG dosing, and why timely action saves lives.

✓Reviewed by an MBBS, AFIH Certified Physician  |  Based on NCDC India & WHO 2018 Guidelines
Clinical reference

A dog bite. A scratch from a stray cat. A monkey grazing your hand. These moments happen every day across India — and in the panic that follows, most people don't know what to do next, or how serious the risk really is.

Rabies is one of the most feared diseases in medicine, and for good reason: once symptoms appear, it is almost always fatal. There are fewer than a handful of documented human survivors in recorded medical history. India accounts for approximately 36% of the world's rabies deaths — around 18,000–20,000 people per year. Almost all of these deaths are preventable.

Rabies is 100% preventable if you act quickly and correctly after an exposure. This guide tells you exactly what to do.

WHAT IS RABIES

What Is Rabies?

Rabies is a viral disease caused by the Rabies lyssavirus, which attacks the central nervous system. Once the virus reaches the brain, it causes progressive and fatal encephalitis — inflammation of the brain. In India, dogs are responsible for over 96% of rabies deaths in humans. Other animals that can transmit rabies include cats, monkeys, jackals, foxes, and bats.

How Rabies Spreads — and How It Doesn't

Rabies CAN spread through: bite wounds from an infected animal, scratches that break the skin, licks on open wounds or mucous membranes (eyes, mouth, nose), and rarely through organ transplants from infected donors.

Rabies CANNOT spread through: intact unbroken skin, touching or petting an animal, blood or urine of an infected animal, or contact with a vaccinated pet showing no symptoms.

RECOGNISING RABIES

Recognising Rabies in an Animal

Not every animal bite comes from a rabid animal — but you cannot know for certain at the time of exposure. Warning signs in animals include:

  • Unprovoked aggression or biting
  • Excessive drooling or foaming at the mouth
  • Disorientation, staggering, appearing "drunk"
  • Hydrophobia — difficulty swallowing triggered by water
  • Paralysis of the jaw or hind legs
  • A normally nocturnal animal (like a bat) appearing in daylight

⚠️ A healthy-looking animal can still be in the early stages of rabies. Do not wait to see if the animal develops symptoms before seeking medical care. You may observe the animal in parallel — but never instead of seeking treatment immediately.

EXPOSURE CATEGORIES

Exposure Categories — I, II, and III

The first thing a doctor assesses after an animal exposure is the category of exposure. This determines what treatment you need.

Cat I
No Exposure

Touching or feeding animals, licks on intact unbroken skin.

→ No PEP required

Cat II
Minor Exposure

Nibbling of uncovered skin, minor scratches or abrasions without bleeding.

→ ARV vaccine only

Cat III
Severe Exposure

Transdermal bites, bleeding scratches, licks on broken skin or mucous membranes, bat exposure.

→ ARV + RIG on Day 0

⚠️ When in doubt, treat as Category III. It is always safer to do more. The consequences of under-treating a rabies exposure are irreversible.

FIRST AID

What to Do in the First 15 Minutes — First Aid at Home

Before you reach a hospital, the single most important action you can take is wash the wound immediately. This one step significantly reduces the chance of the virus entering nerve tissue.

  1. Wash with soap and running water for at least 15 minutes. This is not optional. Thorough washing alone dramatically reduces viral load at the wound site. Use any soap available.
  2. Apply an antiseptic. Povidone-iodine (Betadine), 70% ethanol, or any iodine-based solution should be applied after washing.
  3. Do not suture the wound immediately. Delay suturing by a few hours after RIG infiltration in Category III cases — sealing the wound can trap virus inside.
  4. Do not apply home remedies. Chilli powder, oil, turmeric, or other traditional applications are harmful and delay proper treatment.
  5. Go to a hospital immediately. Do not wait until the next day. Time is critical.
PEP

Post-Exposure Prophylaxis (PEP) — The Treatment That Saves Lives

Post-exposure prophylaxis (PEP) is the medical treatment given after a rabies exposure to prevent the disease from developing. It has two components: the Anti-Rabies Vaccine (ARV) and, for Category III exposures, Rabies Immunoglobulin (RIG).

1. Anti-Rabies Vaccine (ARV) — The 4-Dose Essen Schedule

India follows the 4-dose intramuscular Essen regimen recommended by the NCDC and WHO. The vaccine stimulates your immune system to produce antibodies against the rabies virus.

Dose 1
Day 0
As soon as possible after exposure
Dose 2
Day 3
3 days after Dose 1
Dose 3
Day 7
7 days after Dose 1
Dose 4
Day 28
28 days after Dose 1

Day 0 is the day of the first injection — not necessarily the exact day of the bite, though you should start as soon as possible. The vaccine is given as an intramuscular injection into the deltoid muscle (upper arm) in adults, or the anterolateral thigh in young children. Never in the gluteal region (buttocks), as absorption there is poor.

💉 Use the RxMedCalc Rabies PEP Scheduler to instantly calculate your exact ARV dose dates by entering the date of your first injection.

2. Rabies Immunoglobulin (RIG) — For Category III Only

RIG provides immediate, passive immunity — ready-made antibodies that neutralise the virus at the wound site while the vaccine takes several days to build the body's own immune response. This bridging period is critical in severe exposures.

RIG is given only once — on Day 0, alongside the first ARV dose. It cannot be given on a later day. As much of the dose as anatomically possible must be infiltrated directly into and around the wound. Any remaining volume is given as an intramuscular injection at a site distant from the vaccine.

TypeSourceDoseNotes
ERIG (Equine RIG)Horse serum40 IU/kg body weightWidely available; skin sensitivity test recommended before use
HRIG (Human RIG)Human donors20 IU/kg body weightPreferred where available; lower risk of adverse reaction

⚖️ Use the RxMedCalc ARV Dose & RIG Calculator to calculate the exact RIG dose in mL by body weight for both ERIG and HRIG.

Intradermal vs. Intramuscular Route

Some government hospitals use an Intradermal (ID) regimen instead of the standard IM Essen schedule. Here is a quick comparison:

FeatureIntramuscular (IM) EssenIntradermal (ID)
Visits4 (Days 0, 3, 7, 28)3 (Days 0, 3, 7)
Injection sites1 site per visit2 sites per visit (0.1 mL each)
Vaccine volumeFull vial per doseFraction of vial — more economical
AvailabilityMost hospitalsCertified centres only
SuitabilityAll patientsNot for immunocompromised patients
SPECIAL SITUATIONS

Special Situations

Immunocompromised Patients

Patients on immunosuppressive therapy, HIV-positive individuals with low CD4 counts, or those on systemic corticosteroids may have a blunted vaccine response. They may require a 5th dose on Day 90, antibody titre testing to confirm adequate immunity, and RIG even for Category II exposures in some cases. Always consult an infectious disease specialist.

Previously Vaccinated Individuals

If a person has previously completed a full pre-exposure or post-exposure rabies vaccine course with documented immunity, they require only 2 booster doses (Days 0 and 3) — and no RIG is needed.

Pregnancy

Rabies PEP is not contraindicated in pregnancy. The risk of untreated rabies exposure far outweighs any theoretical risk from the vaccine. Pregnant women should receive the full PEP regimen including RIG where indicated.

Children

The same dose and schedule applies to children as adults for the ARV. RIG dose is calculated by body weight using the same formula. In young children, the injection site is the anterolateral thigh rather than the deltoid.

WHAT HAPPENS WITHOUT VACCINATION

What Happens Without Vaccination?

The incubation period — from bite to symptoms — typically ranges from 1 to 3 months, but can be as short as a week or as long as a year. Bites on the face or neck progress faster due to proximity to the brain.

Early symptoms include fever, headache, weakness, and a distinctive pain or burning at the wound site. Later symptoms include hydrophobia (spasm triggered by water), aerophobia (fear of air drafts), hypersalivation, hallucinations, and paralysis.

⚠️ Without prior vaccination, rabies is essentially 100% fatal once symptoms begin. There is no effective treatment at this stage. This is why immediate PEP — before the virus reaches the brain — is the only window of opportunity.

MYTHS

Common Myths About Rabies in India

❌ Myth: "I'll wait and see if the dog dies."
✅ Fact: The dog may die — or may not be rabid at all. Either way, you lose critical time. Begin PEP immediately and monitor the animal in parallel.
❌ Myth: "The bite didn't bleed much, so I don't need a vaccine."
✅ Fact: Even minor scratches that break skin (Category II) require ARV. Exposure category does not depend on how much you bled.
❌ Myth: "I got vaccinated as a child, I'm protected."
✅ Fact: Childhood rabies vaccination does not provide lifelong immunity. A full post-exposure regimen is still required after exposure, though it may be simplified if immunity is documented.
❌ Myth: "The animal was vaccinated so I'm safe."
✅ Fact: Domestic pet vaccination significantly reduces risk but you cannot verify the quality or timing of the animal's vaccination. Seek medical evaluation for any Category II or III exposure regardless.
❌ Myth: "Rabies vaccines have dangerous side effects."
✅ Fact: Modern cell-culture rabies vaccines used in India today are very well tolerated. The old nerve tissue vaccines (NTV) with significant side effects are no longer in use.
TAKEAWAYS

Key Takeaways

  • Wash the wound immediately with soap and running water for at least 15 minutes — the single most important first action
  • All Category II and III exposures require ARV — do not delay starting the vaccine
  • Category III exposures also require RIG on Day 0 — it cannot be given on a later date
  • India follows the 4-dose Essen IM regimen — Days 0, 3, 7, and 28
  • Complete all 4 doses — missing any dose significantly reduces protection
  • ERIG dose = 40 IU/kg; HRIG dose = 20 IU/kg — infiltrate into wound on Day 0
  • Rabies is fatal once symptomatic — but 100% preventable with timely PEP

💉 Calculate your exact ARV vaccination dates: RxMedCalc Rabies PEP Scheduler →

References

  1. National Centre for Disease Control (NCDC), India. National Guidelines for Rabies Prophylaxis. Directorate General of Health Services, Ministry of Health & Family Welfare.
  2. World Health Organization. WHO Expert Consultation on Rabies — Third Report. WHO Technical Report Series No. 1012, 2018.
  3. World Health Organization. Rabies vaccines: WHO position paper. Weekly Epidemiological Record, 2018.
  4. Sudarshan MK et al. Assessing the burden of human rabies in India: National Multicentric Rabies Survey. Assoc Prev Control Rabies India J. 2007.

This article is written for informational purposes and is based on NCDC India and WHO guidelines current at the time of publication. It is not a substitute for professional medical advice. Always consult a qualified physician for clinical decisions regarding rabies post-exposure prophylaxis.

Built by an MBBS, AFIH Certified Physician in Punjab, India | RxMedCalc.com