Japanese Encephalitis Virus Vaccine, Inactivated
Japanese Encephalitis Virus Vaccine, Inactivated is a vaccine that provides protection against Japanese Encephalitis, a serious mosquito-borne viral infection that affects the brain and nervous system. The virus is endemic to many parts of Asia and the Western Pacific. This vaccine is recommended for travelers to endemic regions and, in some cases, for residents living in these areas.
An inactivated vaccine that protects against Japanese Encephalitis, a potentially fatal mosquito-borne brain infection common in Asia and the Western Pacific.
Key facts at a glance
- RxNorm
- 845525
- Generic
- Japanese Encephalitis Virus Vaccine, Inactivated
- Class
- unclassified
- Brands
- Ixiaro
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- prefilled syringe
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Prevention of Japanese Encephalitis virus infection in travelers to endemic areas of Asia and the Western Pacific, as well as in residents of these regions who are at risk. The virus is primarily transmitted through infected mosquitoes, particularly in rural agricultural areas.
This inactivated (killed) vaccine stimulates the immune system to produce protective antibodies against the Japanese Encephalitis virus without causing the disease. The immune response helps the body recognize and fight the virus if exposure occurs.
Administered as a 2-dose series given on days 0 and 28. Common side effects include pain at the injection site, headache, muscle pain, and fatigue. The vaccine is generally well-tolerated but is contraindicated in individuals with severe allergic reactions to any vaccine component. Travelers should complete the vaccination series at least 1 week before potential exposure.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 29, 2026. · Read our editorial policy