Nepal does not require proof of any vaccination from most visitors. That leads some trekkers to assume none is needed, which is wrong. The infections you are most likely to meet — in food, in water, and from an animal bite a week's walk from a hospital — are exactly the ones vaccines prevent.
The good news is that the high mountains are healthy places. Mosquito-borne diseases are a concern only in the lowlands, and most of what you need is the same set of vaccines recommended for travel anywhere in South Asia. The key is timing: start six to eight weeks ahead.
This article is general information for trip planning, not medical advice. Recommendations differ between countries and change over time. A travel health clinic will give advice based on your own vaccination history, health and itinerary.
When to Start
- Six to eight weeks before departure is ideal. Several vaccines need two or three doses spread over three to four weeks, and most take around two weeks to give full protection.
- Find your records first. Knowing what you had as a child and on previous trips saves both money and needles.
- Leaving in under a month? Go anyway. Single-dose vaccines such as hepatitis A and typhoid still protect, and some courses have accelerated schedules.
- Combine it with prescriptions. The same appointment is the time to ask about altitude medication and a stand-by antibiotic — see our medication guide.
The Vaccines, One by One
| Vaccine | Who it is for | Typical schedule | Notes |
|---|---|---|---|
| Routine vaccines: tetanus, diphtheria, polio, measles-mumps-rubella | Everyone | Boosters if not up to date | A tetanus booster within the last ten years matters on a trek — cuts and scrapes are routine |
| Hepatitis A | Almost all travellers | One dose before travel; a second 6 to 12 months later for long-term protection | Spread by contaminated food and water |
| Typhoid | Almost all travellers | One injection at least two weeks before, or an oral course | Protection is good but not complete; food and water care still matter |
| Hepatitis B | Longer stays; anyone who might need medical or dental care; many clinics now advise it for all | Three doses over six months, or an accelerated schedule | Spread by blood and body fluids |
| Rabies (pre-exposure) | Trekkers, especially on remote routes; children; long stays | Two or three doses over one to four weeks | See the section below — the most under-rated vaccine for Nepal |
| Japanese encephalitis | Long stays in the lowlands; rural Terai visits in and after the monsoon | Two doses, usually four weeks apart | Not needed for a mountains-only trip |
| Influenza and COVID-19 | Everyone, per home-country advice | As per seasonal schedule | Respiratory infections spread fast in lodge dining rooms |
| Cholera | Aid workers; those staying in areas with an outbreak | Oral vaccine | Rarely advised for trekkers |
| Yellow fever | Only travellers arriving from a country with yellow fever risk | Single dose; certificate required | Nepal has no yellow fever; this is an entry rule, not a health risk |
For a typical two- or three-week trek, the usual core is: routine vaccines up to date, hepatitis A, typhoid, and a serious conversation about rabies.
Rabies: The One Trekkers Underestimate
Rabies is present throughout Nepal. It is carried mainly by dogs, and also by monkeys — the bold ones at Swayambhunath and Pashupatinath in Kathmandu account for a good share of bites to tourists. Village dogs are a fixture of every trail. Once symptoms of rabies appear the disease is almost always fatal, so everything depends on treatment after a bite and before symptoms.
That is where trekking changes the calculation.
| Not vaccinated beforehand | Vaccinated beforehand | |
|---|---|---|
| After a bite you need | Rabies immunoglobulin injected into the wound, plus a course of four or five vaccine doses over two to four weeks | Two booster doses of vaccine, a few days apart |
| Immunoglobulin | Required — and it is expensive, in short supply worldwide, and in Nepal available only at a few clinics in the main cities | Not required |
| Urgency | As soon as possible — which from a high trail means abandoning the trek and usually a helicopter | Prompt, but with more margin; boosters can be given when you reach a clinic |
| Effect on your trip | The trek is over | Often an interruption rather than an ending |
If you are bitten, scratched or licked on broken skin by any mammal, vaccinated or not:
- Wash the wound immediately with soap and running water for a full fifteen minutes. This step alone greatly reduces the risk.
- Apply an antiseptic such as povidone-iodine.
- Do not close the wound with tape or stitches.
- Tell your guide and get to a clinic that stocks rabies vaccine — in practice, Kathmandu or Pokhara.
- Contact your insurer. Evacuation for rabies exposure is normally covered.
Prevention is simple: do not pet dogs however friendly, do not feed or tease monkeys, carry no food in your hands at temple sites, and teach children the same.
Malaria, Dengue and Japanese Encephalitis: A Lowland Matter
Mosquito-borne diseases in Nepal are confined to lower elevations. Above about 2,000 m — which is where trekking happens — they are not a concern.
- Malaria. Risk exists only in parts of the Terai, the southern plains along the Indian border, and is low. There is none in Kathmandu, Pokhara or on the trekking routes. National advice differs on whether tablets are needed for the Terai; many authorities advise bite avoidance alone. If you are adding Chitwan, Bardia or Lumbini, especially between May and October, ask your clinic.
- Dengue. Has become more common in Nepal in recent years, with outbreaks in the lowlands and in Kathmandu and Pokhara, mainly from the monsoon through to November. There is no tablet to prevent it; protection is avoiding bites. The mosquitoes that carry it bite during the day.
- Japanese encephalitis. A rare but serious infection in the rural Terai during and after the monsoon. The vaccine is advised for long stays or extended rural travel in the lowlands in that season, not for a standard trek.
- Use a repellent containing DEET, picaridin or a similar proven ingredient on exposed skin.
- Wear long sleeves and trousers at dawn, dusk and — for dengue — through the day.
- Sleep under a net or in a screened, fan-cooled or air-conditioned room in the lowlands.
More on the lowland parks is in our Chitwan guide.
Which Vaccines for Which Trip
| Trip | Core | Consider |
|---|---|---|
| Short trek from Pokhara or Kathmandu (1 to 2 weeks) | Routine, hepatitis A, typhoid | Rabies |
| Everest, Annapurna or Manaslu trek (2 to 3 weeks) | Routine, hepatitis A, typhoid | Rabies, hepatitis B |
| Remote or camping trek (Dolpo, Kanchenjunga, Makalu) | Routine, hepatitis A, typhoid, rabies | Hepatitis B |
| Trek plus Chitwan, Bardia or Lumbini | Routine, hepatitis A, typhoid | Rabies; malaria advice; Japanese encephalitis in monsoon |
| Long stay or volunteering (over a month) | Routine, hepatitis A, hepatitis B, typhoid, rabies | Japanese encephalitis |
| Travelling with children | Routine up to date, hepatitis A, typhoid | Rabies strongly — children are bitten more often and may not report it |
The more remote the route, the stronger the case for rabies vaccination: on the Upper Dolpo or Kanchenjunga trails, reaching a clinic that stocks immunoglobulin can take several days even with a helicopter.
Vaccines Do Not Cover Everything
The most common illness on a Nepal trek is travellers' diarrhoea, and there is no vaccine for most of its causes. Nor is there one for hepatitis E, a water-borne infection that is widespread in Nepal, or for the colds that circulate in lodge dining rooms. Vaccination sits alongside the basics:
- Drink only treated or boiled water — see drinking water while trekking.
- Wash or sanitise your hands before every meal.
- Eat freshly cooked, hot food — see food on the trail.
- Carry a stand-by treatment for stomach illness — see stomach illness on a trek.
Getting Vaccinated in Nepal, and Paperwork
Travel-medicine clinics in Kathmandu stock most travel vaccines, including rabies, and can start or complete a course. That is useful for long-stay visitors and for anyone bitten by an animal. It is not a substitute for being vaccinated at home: protection takes weeks to develop, and your first days in the country are when you are most likely to meet a contaminated meal.
- Carry your vaccination record — a photo on your phone is enough.
- A yellow fever certificate is needed only if you arrive from, or have transited through, a country with yellow fever risk.
- Entry health rules can change. Check current requirements shortly before you travel.
- Tell your trek operator if you have chosen not to have a recommended vaccine, so the guide knows what a bite or an illness would mean.
We Provide This Service: Pre- and Post-Trek Health Support
Green Compass Treks includes health support with every trek. We do not give vaccines or medical advice — that is for your travel clinic — but we give you what the clinic needs to advise you properly, and we deal with the practical side in Nepal.
- Before you travel: a clear description of your route — regions, altitudes, how remote, whether you pass through the lowlands, and the season — so the clinic can recommend the right vaccines.
- On arrival: a health briefing that covers dogs, monkeys, food and water, in practical terms.
- On the trek: guides who know the wound-washing procedure for animal bites and carry antiseptic in the group medical kit.
- If you are bitten: immediate arrangements to reach a clinic in Kathmandu or Pokhara that stocks rabies vaccine, including helicopter evacuation through your insurer where needed.
- After the trek: help arranging a clinic appointment for follow-up doses or any symptoms before you fly home.
If you are unsure what your itinerary involves, ask us before your clinic appointment and we will send the details.
