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.
Japanese B Encephalitis is present throughout the Indian subcontinent, South East and East Asia and the Pacific.
Map courtesy of WHO
Two doses – Day 0 and Day 28. If rapid protection is required the second dose can be given on day 7 for those aged 12-65 years.
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
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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: