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Japanese Encephalitis

Japanese Encephalitis

What is it?

Japanese B Encephalitis is spread by mosquitoes in parts of Asia.  It is a serious infection of the brain and vaccination is advised for those travelling to risk areas who are unable to avoid mosquito bites, staying for long periods (e.g. more than 4 weeks) or those visiting rural areas. Vaccination can also be considered for those spending a shorter period of time in rice fields (where the mosquito vector breeds) or close to pig farming (a reservoir host for the virus) Japanese Encephalitis vaccine is over 90% effective. Japanese Encephalitis is spread by night-time biting mosquitoes and for added protection you should sleep under a mosquito net and wear a DEET based insect repellent on your skin if you are visiting rural areas.

Where is Japanese B encephalitis found?

Japanese B Encephalitis is present throughout the Indian subcontinent, South East and East Asia and the Pacific.

WHO- Jap E risk areas

Map courtesy of  WHO 

Vaccine Schedule (1- 2 years protection)

Two doses – Day 0 and Day 28. If rapid protection is required the second dose can be given on day 7.

Full immunity takes up to one week to develop after the second dose.

Booster –  every 1 – 2 years.  For those aged 18 – 65 years protection will last for 10 years after a booster at 1 year.

Children – can be given to infants and children aged 2 months and over

Cost Per Dose

Download our full price list


Combine this vaccine with insect repellent and mosquito nets for peace of mind – available to purchase from our shop in clinic.

For further disease and country recommendations information visit:

 Travel Health Pro