Japanese Encephalitis

Japanese Encephalitis (JE) Vaccine for Travel

What is Japanese Encephalitis?

Japanese encephalitis (JE) is a viral infection primarily transmitted through the bite of infected mosquitoes, particularly in rural agricultural areas of Asia. 

How to Prevent Japanese Encephalitis?

Prevention of Japanese encephalitis includes wearing long-sleeve clothing to minimize mosquito bites, avoiding outdoor activities and staying in accommodations with air conditioning, mosquito screens or bed nets. Consideration for the time of your trip may be important as Japanese encephalitis transmission occurrences may vary seasonally. For prolonged visits to endemic countries, vaccination for Japanese encephalitis is recommended based on risks and potential for infection.

Is Japanese Encephalitis Vaccine Necessary?

The Japanese encephalitis (JE) vaccine provides effective protection against the virus and is recommended for individuals traveling to or residing in areas where JE is endemic or poses a significant risk. The vaccine stimulates the immune system to produce antibodies that can neutralize the JE virus, reducing the likelihood of infection and subsequent illness. It is typically administered in a series of doses, 2 dose primary series with a booster shot recommended 1-2 years after for long-term immunity.

Japanese encephalitis (JE) vaccination is recommended for travelers:

  • Relocating to an area with JE
  • Extended stays (ie. 1+ month) in areas with JE
  • Frequent travel to areas with JE

Consider JE vaccination if:

  • Participating in activities that increase risk of infection, such as visiting rural areas, hiking or camping, or staying in ill-equipped accommodations 
  • Going to areas with JE who are uncertain of their activities or duration of stay

To find out if your destination(s) require the Japanese Encephalitis vaccine, consult a Rockdoc Travel Medicine Professional here.

We have made every effort to ensure the accuracy and reliability of the provided information, however, it is not feasible for us to update daily. Please book a virtual consultation with one of our Travel Medicine Professionals for current, personalized advice and answers to any questions you may have.

Is Japanese Encephalitis Serious Disease?

Symptoms of Japanese Encephalitis include:

  • Fever
  • Headache
  • Fatigue
  • Nausea and vomiting
  • Stiff neck
  • Seizures
  • Confusion or altered mental state
  • Muscle weakness or paralysis
  • Tremors
  • Coma (in severe cases)

Not all individuals infected with Japanese encephalitis virus develop symptoms, and in some cases, infections may cause only mild symptoms or go unnoticed.

In severe cases, Japanese encephalitis can lead to long-term neurological complications or be fatal. If you experience any concerning symptoms, it is crucial to seek medical attention promptly. 

Available travel vaccinations and medications

We offer the following travel vaccinations and medications:

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