Japanese Encephalitis is a viral infection causing a severe flu like illness. It is spread by mosquitoes that bite between dusk and dawn, and occurs mainly in rice and paddy field areas, often where pig farming takes place. Vaccination is recommended for rural or long-stay travellers in affected areas.
Vaccination content
Inactivated strains of Japanese Encephalitis virus.
Who should be vaccinated?
Those travelling to or residing in areas where the disease is common. The disease is seasonal in some areas, and plans for protection should be considered accordingly. Additional vaccine information: Only IXIARO vaccine is licenced in the UK.
Vaccine dose
Two doses at 0 and 28 days. Vaccine effective 7 days after 2nd dose.
When to get vaccinated
6 weeks before travel
Who should not be vaccinated?
Patients who have had a serious reaction (”anaphylaxis”) to a previous dose of this vaccine or its constituents.
Pregnancy and breastfeeding
Subject to medical assessment, vaccine is not recommended for pregnant or breast feeding women.
Duration of immunity
1 year
Side effects
Very few. Temporary tenderness at the site of the injection