
OXFORD'S LEADING TRAVEL VACCINATION CLINIC
Japanese Encephalitis Vaccination Oxford
Japanese encephalitis is a viral infection transmitted by mosquitoes, primarily found in certain regions of Asia. It cancause severe neurological symptoms and is an important consideration for travellers to affected areas. If your travelplans include destinations where Japanese encephalitis is prevalent, it is strongly advised to seek vaccination as apreventive measure.

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Frequently Asked Questions
What is Japanese Encephalitis?
Japanese encephalitis, caused by the Japanese encephalitis virus (JEV), is a significant viral encephalitis in Asia. It is transmitted by mosquitoes and is classified within the same genus as dengue, yellow fever, and West Nile viruses. The initial recorded case of Japanese encephalitis dates back to 1871 in Japan.
How can you contract Japanese Encephalitis?
Japanese encephalitis is contracted through the bite of infected mosquitoes, primarily of the Culex species. The mosquitoes become infected by feeding on animals, particularly pigs and birds, that carry the Japanese encephalitis virus (JEV). Humans can then become infected when bitten by these infected mosquitoes. It's important to note that person-to-person transmission of Japanese encephalitis is extremely rare and does not play a significant role in the spread of the disease.
Symptoms of Japanese Encephalitis
The top five symptoms of Japanese encephalitis include:
Fever: Persistent fever is a common symptom of Japanese encephalitis. The fever may be accompanied by chills and sweating.
Headache: Severe headaches, often described as migraines, are frequently experienced by individuals infected with Japanese encephalitis.
Altered Mental State: The disease can cause confusion, disorientation, and changes in behaviour, including irritability and restlessness.
Stiff Neck: Neck stiffness, along with muscle pain and stiffness, can be a prominent symptom of Japanese encephalitis.
Neurological Symptoms: In severe cases, Japanese encephalitis can lead to neurological complications such as seizures, paralysis, and coma.
It is important to note that the severity and range of symptoms can vary among individuals, and not all infected individuals may experience the same set of symptoms. If you suspect you or someone else may have Japanese encephalitis, seek immediate medical attention for proper diagnosis and treatment.
How is Japanese Encephalitis Treated?
The treatment for Japanese encephalitis primarily focuses on managing the symptoms and providing supportive care. There is no specific antiviral medication to cure the viral infection itself.
In mild cases, rest, hydration, and over-the-counter pain relievers can help alleviate symptoms such as fever, headache, and body aches. Close monitoring and observation are essential during the recovery process.
In more severe cases, hospitalisation may be required. Treatment may involve intravenous fluids, pain management, and the use of medications to control seizures or reduce brain inflammation. In some cases, respiratory support may be needed if there are breathing difficulties.
Prevention is key in combating Japanese encephalitis. Vaccination is the most effective way to prevent Japanese Encephalitis. It is important to take precautions to avoid mosquito bites, such as using mosquito repellents, wearing protective clothing, and staying in screened or air-conditioned accommodations.
How to prevent Japanese Encephalitis?
Vaccination is the most effective way to prevent Japanese Encephalitis. Consult with a healthcare professional or travel clinic to determine if the vaccine is recommended for your travel destination and receive the recommended dosage.
Japanese Encephalitis is primarily transmitted through mosquito bites, and therefore taking steps to avoid mosquito bites can help reduce the risk of infection. Use insect repellents containing DEET or picaridin on exposed skin, wear long-sleeved clothing, and use bed nets treated with insecticide when sleeping in areas with a high risk of Japanese Encephalitis.
Countries that have Japanese Encephalitis?
The top countries/regions where Japanese encephalitis is commonly found include:
Southeast Asia: Countries such as Thailand, Vietnam, Cambodia, Laos, and Myanmar have a significant incidence of Japanese encephalitis.
East Asia: Japan, South Korea, and Taiwan have reported cases of Japanese encephalitis, although the disease is generally less common in these countries.
South Asia: Parts of India and Nepal have reported cases of Japanese encephalitis, particularly in rural areas.
China: Japanese encephalitis is prevalent in certain regions of China, particularly in rural agricultural areas.
Pacific Islands: Japanese encephalitis has been reported in some Pacific Island countries, including
Papua New Guinea and the Solomon Islands.
It is important to note that the risk of contracting Japanese encephalitis can vary within each country and even within specific regions. The disease is primarily transmitted through mosquito bites, and travellers to these regions should take necessary precautions, including vaccination and mosquito bite prevention measures, to reduce the risk of infection. It is recommended to consult with healthcare professionals or travel health clinics for personalised advice before traveling to areas where Japanese encephalitis is common.