japanese encephalitis vaccine (inactivated, adsorbed) at a glance
Medicine class
Inactivated, aluminium-adsorbed viral vaccine
Licensed role
Active immunisation for people at risk through travel or occupation
Administration
Usually injected into a muscle by a healthcare professional
Travel protection
Mosquito-bite precautions remain important after vaccination
What is japanese encephalitis vaccine (inactivated, adsorbed) used for?
It is licensed for active immunisation against Japanese encephalitis.
People aged 2 months and older who may be exposed during travel
People at occupational risk, such as relevant laboratory workers
How does japanese encephalitis vaccine (inactivated, adsorbed) work?
It contains inactivated Japanese encephalitis virus antigen, so it cannot cause the infection. It prompts the immune system to produce neutralising antibodies that can recognise the virus during later exposure.
How to take japanese encephalitis vaccine (inactivated, adsorbed)
A doctor or nurse usually injects it into the upper-arm muscle; an infant's thigh may be used. It must not be injected into a blood vessel. Subcutaneous injection may exceptionally be considered for someone with a bleeding disorder, although the immune response may be lower.
Tell the vaccinator about previous vaccine reactions, allergies, bleeding disorders or immune-system problems.
Continue using suitable clothing, repellent and mosquito nets in risk areas.
The pre-filled syringe must be shaken to form a uniform suspension before administration.
japanese encephalitis vaccine (inactivated, adsorbed) side effects
Common or expected effects
- Pain or tenderness where the injection was given
- Headache
- Muscle pain
- Tiredness
- Nausea, fever or flu-like symptoms
- Redness, swelling, hardening or itching at the injection site
- In younger children: fever, irritability, diarrhoea or reduced appetite
Get urgent medical advice
- Severe allergic reaction with breathing difficulty, widespread hives, collapse, or swelling of the face, mouth or tongue
- Seek prompt assessment for concerning or persistent breathing difficulty, fainting, unusual bruising or neurological symptoms
japanese encephalitis vaccine (inactivated, adsorbed) in pregnancy
Evidence in pregnancy is limited. The product information advises avoiding this vaccine as a precaution. Anyone who is pregnant, may be pregnant or planning pregnancy should discuss exposure risk and vaccination with a travel-health specialist or prescriber.
japanese encephalitis vaccine (inactivated, adsorbed) while breastfeeding
It is unknown whether vaccine components enter human milk. Harm to a breastfed infant is not anticipated because maternal systemic exposure is negligible, but the product information advises avoiding use during breastfeeding as a precaution and seeking specialist advice.
japanese encephalitis vaccine (inactivated, adsorbed) interactions
Tell the vaccinator about medicines that suppress immunity and any other vaccines being given.
Immunosuppressive medicines
Medicines such as systemic corticosteroids or cancer treatments may reduce the immune response.
Inactivated hepatitis A vaccine
It has been studied alongside this vaccine without clinically relevant interference; separate syringes and injection sites are used.
Inactivated rabies vaccine
It has been studied alongside this vaccine without clinically relevant interference; separate syringes and injection sites are used.
Common questions about japanese encephalitis vaccine (inactivated, adsorbed)
Answers are fully visible for fast scanning and source review.
Who is this vaccine for?
It is licensed for people aged 2 months and older who may be exposed to Japanese encephalitis virus through travel or work.
Is it a live vaccine?
No. It contains inactivated virus antigen and cannot cause Japanese encephalitis.
What should I do if I miss an appointment?
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.