Japanese encephalitis: the green book, chapter 20
Japanese encephalitis immunisation information for public health professionals.
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Japanese encephalitis (JE) is a mosquito-borne viral encephalitis caused by a flavivirus. It is the leading cause of childhood encephalitis in Asia, with an estimated 68,000 clinical cases per annum (World Health Organization, 2019).
This chapter is available to view or download from the National Travel Health Network and Centre (NaTHNaC).
Updates to this page
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Added link to chapter.
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• Added note, cases of JE are also reported outside of the normal seasonal period of high transmission • A rapid schedule can be used off license in children from 2 months and adults over 65 years of age where there is genuinely insufficient time to complete the standard schedule. • Information added on the timing of booster doses for different age groups.
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Updated to include revisions in epidemiology, current date and the type of vaccine available.
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This chapter has been rewritten in light of the Green Cross vaccine being no longer recommended for use in the UK and IXIARO now licenced for infants from 2 months of age.
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Updated Body text to include a link to National Archives (chapter update patches) and NHS Choices.
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First published.