Japanese Encephalitis Vaccine
Find out what vaccinations you may need for you destination
Japanese Encephalitis
Japanese Encephalitis (JE) is a viral illness that spreads through the bite of infected mosquitoes. It mainly affects people in rural or agricultural areas of Asia, especially during the rainy season when mosquito activity increases. Because the virus can cause brain inflammation, the disease poses serious health risks.
Although short-term travellers face a lower risk, anyone staying in rural areas or visiting during peak transmission months may encounter higher exposure.
Symptoms
Most people infected with the virus do not experience symptoms. However, when symptoms appear, they usually begin with a sudden fever, headache, or nausea. In more severe cases, the virus causes brain inflammation, leading to confusion, seizures, paralysis, or coma.
Unfortunately, about one in four severe cases result in death. In addition, many survivors live with long-term neurological complications. Since there is no specific cure, prevention remains the most effective strategy.
Vaccination
The Japanese Encephalitis vaccine prepares your immune system to recognise and fight the virus. Because the vaccine uses inactivated components, it cannot cause the illness.
Dosage and Protection
The vaccine course includes two doses given 28 days apart. Therefore, you should complete the full schedule at least one week before you travel. In some cases, a booster dose is recommended after 12–24 months if the risk continues.
Who Should Get Vaccinated
Travellers who plan extended stays in rural parts of Asia—especially during the wet season—should consider vaccination. In addition, backpackers, outdoor workers, and humanitarian staff face greater exposure and benefit most from the vaccine.
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