What Are the Side Effects of the Japanese Encephalitis Vaccine?

    The side effects of the Japanese encephalitis vaccine are minor.

    Injection site reactions and minor systemic reactions are common after having the Japanese encephalitis vaccination. Common side effects include:

    • Injection site pain, redness and swelling
    • Headache
    • Fatigue
    • Malaise
    • Fever


    People with acute febrile illness, immunodeficiencies, known allergies, and pregnant or breastfeeding women should not receive any Japanese encephalitis vaccines.

    Speak to your doctor for more information about travel health and vaccines.

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