What is the 9-in-1 vaccine for dogs? What it covers, and when it's given
Checked against 5 sources
The "9-in-1" vaccine is the name many Indian vets and pet shops use for a dog's core vaccination series: a combination shot against distemper, hepatitis, parvovirus and parainfluenza (often printed as "DHPPi"), plus a leptospirosis vaccine covering several bacterial strains ("L" or "L4"), with rabies given separately by law — about nine disease-causing organisms covered in total123. There's no single official definition of "9-in-1": different vaccine makers bundle and count the strains differently, so the surest way to know exactly what your dog received is to read the vaccine's own name off the card, or ask your vet234.
- "9-in-1" usually means
- The 4-part combination shot (distemper, hepatitis, parvovirus, parainfluenza) + a 4-strain leptospirosis vaccine + rabies, across the puppy series1234
- "DHPPi" on the card
- D = distemper, H = hepatitis (adenovirus), P = parvovirus, Pi = parainfluenza — the core 4-disease combination shot2
- "L" or "L4" on the card
- Leptospirosis cover; L4 means 4 bacterial strains (serovars) such as canicola, icterohaemorrhagiae, australis and grippotyphosa — some cards show a 2-strain version instead34
- The number isn't standardised
- "5-in-1", "7-in-1" and "9-in-1" are market terms; no WSAVA guideline or Indian standard defines them the same way across brands1234
- When it's given
- Starts at 6–8 weeks, repeated through the puppy series to 16 weeks or older, then a 6-month booster — your vet sets the exact plan1
On this page
Why it's called "9-in-1"
Indian vets and pet shops often describe a dog's core puppy vaccination as a "5-in-1", "7-in-1" or "9-in-1" shot — the number is roughly how many disease-causing organisms (antigens) that brand's combination covers, not a fixed medical term234. A common way the count reaches nine: the four-disease combination shot (distemper, hepatitis, parvovirus, parainfluenza) plus four leptospirosis strains plus rabies1234. A "7-in-1" from a different maker might use only two leptospirosis strains, or count rabies as a separate injection rather than part of the number — see "The number isn't one fixed thing" below.
What the letters mean
| Letter(s) | Stands for | Protects against |
|---|---|---|
| D | Distemper | Canine distemper virus — a serious viral disease2 |
| H | Hepatitis | Canine adenovirus, types 1 and 2 2 |
| P | Parvovirus | Canine parvovirus2 |
| Pi | Parainfluenza | Canine parainfluenza virus, one cause of kennel cough2 |
| L or L4 | Leptospirosis | A bacterial infection; L4 covers four strains (serovars) — canicola, icterohaemorrhagiae, australis and grippotyphosa3 |
| R | Rabies | Given from 12 weeks by Indian rule; some vaccines combine it with 2 leptospirosis strains as "RL"4 |
The number isn't one fixed thing
There's no single official source — not WSAVA's international guideline, nor an Indian government standard — that defines exactly what "9-in-1" must contain. Each vaccine maker bundles a different mix of strains under its own product name1234. If you want to know exactly what your dog received, read the vaccine's own name off the vial or card, or ask your vet to confirm.
When it's given
The combination shot usually starts at 6 to 8 weeks old and repeats every 2 to 4 weeks until 16 weeks or older, with one more dose around 6 months; leptospirosis follows a similar early schedule, and rabies starts at 12 weeks by Indian rule1. For the full age-by-age chart for dogs and cats, with deworming too, see the puppy and kitten vaccination schedule.
What this page doesn't cover
This page explains the name on the card, not side effects or price — those depend on your vet, your dog's health and the clinic. Ask your vet about reactions to watch for after any vaccine. If a bill looks high, see how to check a vet bill.
Not fully clear yet
Official sources disagree or leave gaps on these. Confirm before you rely on them.
- "9-in-1" (and "5-in-1", "7-in-1") are used differently by different vaccine makers and clinics; this page describes the common pattern (4-disease shot + leptospirosis strains + rabies), not one official definition, because no single source lists every Indian brand's exact antigen count1234.
- We could not confirm from a WSAVA or manufacturer source how common it is for Indian combination vaccines to also include canine coronavirus; one Indian veterinary information portal lists it in a routine schedule, but this isn't confirmed elsewhere5.
Sources and how we check
Facts checked against the official sources below by Thapki. Written with AI help from the sources below, then checked line by line; the Thapki team reads and approves every page before it goes live. How we check