Japanese Encephalitis Vaccine Overview
Japanese encephalitis is a rare but potentially serious viral infection spread through the bite of an infected mosquito. It can cause inflammation of the brain and, in severe cases, may lead to lasting neurological complications.
The infection is not found in the UK. It occurs mainly across parts of Asia and the Western Pacific, particularly in rural and agricultural areas where rice cultivation and pig farming are common.
How the Infection Spreads
Mosquitoes become infected after feeding on animals or birds carrying the virus, particularly pigs and wading birds. The virus is then transmitted to humans through mosquito bites.
Who Is More Likely to Be at Risk?
The overall risk for most travellers is very low, particularly for people taking short trips to cities. Risk may be higher when travel involves longer stays, rural environments or significant outdoor exposure.
- Travellers staying in a risk area for one month or longer
- People living or working in rural communities
- Visitors to rice fields, wetlands, marshes or pig farms
- Campers, trekkers and outdoor workers
- People spending substantial time outdoors from dusk to dawn
- Frequent travellers to affected parts of Asia
- Travellers with uncertain or flexible itineraries
How Is the Vaccine Given?
The Japanese encephalitis vaccine available in the UK is called IXIARO. It is administered as an injection, usually into the upper arm.
The standard primary course consists of two doses given on day 0 and day 28. The course should be completed at least one week before potential exposure to Japanese encephalitis.
Accelerated Schedule
Adults aged 18 to 65 may be able to receive an accelerated course, with doses given on day 0 and day 7. Suitability depends on age, medical history, departure date and the pharmacist’s clinical assessment.
Where Is Japanese Encephalitis Found?
Japanese encephalitis occurs in parts of East Asia, South Asia, Southeast Asia and the Western Pacific. Risk varies between countries, regions, seasons and types of travel.
- India and parts of South Asia
- China
- Japan and South Korea
- Thailand, Vietnam, Cambodia and Laos
- Indonesia and the Philippines
- Malaysia and other parts of Southeast Asia
- Selected Western Pacific regions
- Some areas of northern Australia
Japanese Encephalitis Vaccination for Travel to Asia
Hampstead Travel Clinic provides private Japanese encephalitis vaccination for suitable adults and children travelling to risk areas. Our experienced pharmacy team will assess your itinerary, length of stay, season of travel and planned activities before advising whether vaccination is recommended.
When Should Japanese Encephalitis Vaccination Be Considered?
Vaccination is most likely to be recommended for travellers with increased mosquito exposure in affected regions. Even a shorter trip may justify vaccination when it involves camping, fieldwork, rural communities or regular outdoor activity at night.
- Stays lasting one month or longer
- Living or working in a risk area
- Rural travel during transmission season
- Camping, trekking or cycling trips
- Visits near rice fields or wetlands
- Travel close to pig farms
- Outdoor work during dusk or night-time
- Uncertain or changing travel itineraries
Your Japanese Encephalitis Vaccination Appointment
We will assess your individual risk and plan the most suitable vaccine schedule around your departure date.
Review Your Itinerary
We assess every destination, region, season and length of stay.
Assess Your Exposure
We discuss rural travel, accommodation and outdoor activities.
Receive Your First Dose
When suitable, the first vaccine is administered into the upper arm.
Complete the Course
We schedule the second dose and discuss any future booster requirement.
Preventing Mosquito Bites While Travelling
Vaccination should be combined with effective mosquito-bite precautions. The mosquitoes that spread Japanese encephalitis usually feed between dusk and dawn.
- Apply an effective insect repellent to exposed skin
- Wear long sleeves, long trousers, socks and closed shoes
- Sleep in screened or air-conditioned accommodation where possible
- Use an insecticide-treated mosquito net when required
- Take extra care outdoors between dusk and dawn
- Use suitable insecticide treatments on clothing and equipment
- Keep doors and windows closed or properly screened
- Continue bite prevention even after vaccination
Japanese Encephalitis Vaccine in Hampstead, North West London
Hampstead Travel Clinic is located inside Allchin Pharmacy at 28 Englands Lane, London, NW3 4UE. We provide private Japanese encephalitis vaccination and personalised Asian travel health consultations for patients from Hampstead and surrounding North West London areas. Standard and accelerated appointments may be available, subject to age, clinical suitability, vaccine stock and departure date.
- Hampstead
- Belsize Park
- Swiss Cottage
- Finchley Road
- St John’s Wood
- Primrose Hill
- West Hampstead
- Camden
- Kentish Town
- Gospel Oak
- Chalk Farm
- Golders Green
- Kilburn
- Highgate
Japanese Encephalitis Vaccination FAQs
Helpful answers for travellers considering Japanese encephalitis vaccination in Hampstead.
Do I need a Japanese encephalitis vaccine for Asia?
Most short-term travellers staying in major cities have a very low risk and may not need vaccination.
Vaccination is more likely to be recommended for longer stays, rural travel, camping, fieldwork, frequent visits or time spent near rice fields, wetlands and pig farms.
Do I need the vaccine for Thailand?
Many short tourist trips to established urban and beach resorts will have a low risk. Vaccination may be considered for longer journeys, rural travel, extensive outdoor activity or stays in areas where transmission is recognised.
Your exact itinerary and season of travel should be assessed rather than relying on a general recommendation for Thailand.
Do I need the vaccine for Japan?
Risk for most short-term visitors to Japanese cities is generally low. Vaccination may be considered for longer stays, repeated visits, rural work or substantial outdoor exposure in a risk area.
How many Japanese encephalitis vaccine doses do I need?
The standard IXIARO primary course consists of two doses given on day 0 and day 28.
Adults aged 18 to 65 may be eligible for an accelerated course on day 0 and day 7. Both doses should be completed at least one week before potential exposure.
Is an accelerated vaccine course available?
A licensed accelerated IXIARO course may be available for adults aged 18 to 65, with the second dose given seven days after the first.
The accelerated course still needs to be completed at least one week before potential exposure. Suitability must be confirmed through a clinical assessment.
How long before travelling should I start vaccination?
You should ideally arrange your travel health appointment at least four to six weeks before departure. The normal vaccine course takes 28 days and should be completed at least one week before exposure.
Contact the clinic even if you are travelling sooner, as an accelerated schedule may be suitable for some adults.
Can children have the Japanese encephalitis vaccine?
IXIARO is licensed for children from two months of age. Whether a child needs vaccination depends on their destination, age, length of stay and likely mosquito exposure.
Children under three receive a smaller vaccine dose. The pharmacist will confirm the appropriate course.
Will I need a Japanese encephalitis booster?
A booster may be recommended if you remain at risk or expect further exposure after completing the primary course.
The timing depends on age, ongoing risk, previous vaccine dates and the nature of future travel. Bring your records so the pharmacist can advise appropriately.
What are the symptoms of Japanese encephalitis?
Most infections cause no symptoms. Mild illness may cause a headache, high temperature, sickness or abdominal discomfort.
Severe disease can cause a sudden high temperature, severe headache, neck stiffness, confusion, seizures, weakness, paralysis or loss of consciousness and requires urgent hospital treatment.
Is Japanese encephalitis contagious?
Japanese encephalitis is normally transmitted through infected mosquito bites. It is not usually passed directly between people through ordinary contact.
What side effects can the vaccine cause?
Common temporary effects can include pain, tenderness or redness at the injection site, headache, tiredness and muscle aches.
These reactions are usually mild and settle within a few days. The pharmacist will explain expected reactions before vaccination.
Can I have the vaccine during pregnancy?
Japanese encephalitis vaccination is generally avoided during pregnancy as a precaution. However, a clinician may consider it when the risk of infection from unavoidable travel is significant.
Tell the pharmacist if you are pregnant, may be pregnant or are planning a pregnancy.
Do you offer same-day Japanese encephalitis vaccination?
Same-day or short-notice appointments may sometimes be available, subject to pharmacist availability, vaccine stock, age and clinical suitability.
Because two doses are required, contact us as early as possible with your departure date so the appropriate schedule can be planned.
Where is Hampstead Travel Clinic located?
Hampstead Travel Clinic is based inside Allchin Pharmacy at 28 Englands Lane, London, NW3 4UE.
Our clinic is convenient for travellers from Hampstead, Belsize Park, Swiss Cottage, Finchley Road, St John’s Wood, West Hampstead, Camden and surrounding North West London areas.
Book Your Japanese Encephalitis Vaccination
Arrange a personalised travel health consultation with our experienced pharmacy team in Hampstead. We will assess your itinerary and mosquito exposure before recommending the most appropriate standard or accelerated vaccination schedule.
What Our Clients Say
“Nice staff particularly regular pharmacist. Gave me my flu jab painlessly”
“I have been going here for over a decade. The Chief pharmacist always goes out his way to assist me, the rest are also always friendly, polite and helpful.”
“Best local travel clinic. Really friendly and helpful staff. Very quick service.”
“Directed here by my niece. Wonderful! Friendly staff in a cozy pharmacy packed with everything you could need. ”
