Japanese Encephalitis
Our teams are professionally trained to provide you with the highest standard of treatments and services, so every time you visit, you leave with a positive experience.
Our teams are professionally trained to provide you with the highest standard of treatments and services, so every time you visit, you leave with a positive experience.
Japanese encephalitis is a rare but potentially serious viral infection spread by mosquito bites in parts of Asia and the Western Pacific. If you are travelling to rural areas in these regions, particularly during the rainy season, the Japanese encephalitis vaccine is recommended to protect your health. At Allied Pharmacies, we provide a convenient Japanese encephalitis vaccination service with expert travel health advice from our experienced pharmacists, with no GP referral needed.
Japanese encephalitis is a viral infection that affects the brain. According to the NHS, it is caused by the Japanese encephalitis virus, which is spread through the bite of an infected Culex mosquito. These mosquitoes breed in rice paddies and other standing water, making rural and agricultural areas the highest-risk environments. The virus cannot be spread from person to person.
While Japanese encephalitis is rare in travellers, the consequences of infection can be severe. Most people who contract the virus have no symptoms or develop a mild illness, but in a small proportion of cases, the infection causes inflammation of the brain (encephalitis), which can lead to permanent neurological damage or be fatal. There is no specific treatment for Japanese encephalitis, making vaccination the most important form of protection.
Most people infected with the Japanese encephalitis virus do not develop symptoms. When symptoms do occur, they typically appear five to fifteen days after being bitten and may include:
Severe Japanese encephalitis requires immediate hospital treatment. If you develop symptoms after returning from a risk area, seek urgent medical attention and mention your travel history.
The Japanese encephalitis vaccine is recommended for travellers visiting rural areas in high-risk countries, particularly if you plan to spend extended periods outdoors or during the rainy season when mosquito activity is highest. The vaccine may be recommended if you are:
High-risk countries include India, China, Japan, Thailand, Vietnam, Cambodia, Myanmar, Indonesia, the Philippines, Nepal, and Bangladesh, among others. Our pharmacists can assess your individual risk based on your destination, itinerary, and planned activities.
The Japanese encephalitis vaccine used in the UK is called Ixiaro. It is given as two doses, with the second dose administered 28 days after the first. The course should ideally be completed at least one week before travel to allow the vaccine time to take effect. A booster dose may be recommended 12 to 24 months after the initial course for those who remain at ongoing risk.
The vaccine is highly effective at preventing Japanese encephalitis and is well tolerated by most adults and children over the age of two months. Our pharmacists will explain the vaccination schedule, discuss any potential interactions with other travel vaccines, and ensure your course is timed appropriately for your departure date.
The Japanese encephalitis vaccine is generally safe and side effects are usually mild. Common side effects include soreness or redness at the injection site, headache, muscle pain, tiredness, and a mild fever. These typically resolve within a few days. Serious side effects are extremely rare. Our pharmacists will discuss potential side effects with you before administering the vaccine.
In addition to vaccination, taking precautions against mosquito bites can further reduce your risk of Japanese encephalitis. Culex mosquitoes are most active during the evening and night, so it is particularly important to use insect repellent, wear long sleeves and trousers, and sleep under a mosquito net during these hours. Staying in air-conditioned accommodation and using plug-in insect repellent devices can also help reduce your exposure to mosquitoes.
Japanese encephalitis is found across a wide area of Asia and the Western Pacific. The highest-risk countries include India, Nepal, Bangladesh, Myanmar, Thailand, Cambodia, Laos, Vietnam, China, Japan, South Korea, Taiwan, the Philippines, Indonesia, Malaysia, Papua New Guinea, and parts of northern Australia. The virus is most prevalent in rural agricultural areas, particularly near rice fields, irrigation systems, and other areas with standing water where mosquitoes breed.
The risk varies by season, with transmission typically peaking during and after the monsoon season when mosquito populations are at their highest. In tropical regions closer to the equator, transmission can occur year-round. Short-term travellers staying only in urban areas are generally at lower risk, but those visiting rural locations, spending time outdoors in the evening, or travelling for extended periods should strongly consider vaccination.
The Japanese encephalitis vaccine is licensed for use in children from two months of age. If you are travelling to a risk area with young children, our pharmacists can advise on the appropriate vaccination schedule and dosing. Children under three years of age receive a reduced dose. Protecting children is particularly important as they may be more vulnerable to severe illness if infected. Our pharmacists will ensure the vaccine is administered safely and provide guidance on additional mosquito bite prevention measures for young travellers.
Planning a trip to Asia or the Western Pacific? Do not leave your health to chance. Speak to our travel health pharmacists well in advance of your trip to discuss all the vaccinations and precautions you may need, including Japanese encephalitis, hepatitis A and B, typhoid, rabies, and antimalarials. A comprehensive travel health consultation at Allied Pharmacies gives you peace of mind and ensures you are fully protected for your journey.
Getting the Japanese encephalitis vaccine at Allied Pharmacies is straightforward. Contact your nearest branch or walk in to arrange your vaccination. Our pharmacist will carry out a travel health consultation to assess your destination, itinerary, and individual risk. The first dose is administered as an injection into the upper arm, and we will schedule your second dose for 28 days later. We recommend starting the vaccination course at least five weeks before departure to allow time for both doses.
Allied Pharmacies provides a professional, convenient Japanese encephalitis vaccination service with:
You may also be interested in these related travel health services at Allied Pharmacies:
Visit your nearest Allied Pharmacies branch for your Japanese encephalitis vaccine before you travel. Our pharmacists are here to help you stay protected during your trip to Asia. For more information, visit the NHS Japanese encephalitis page.
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