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What countries are affected by Japanese encephalitis?

Page last updated 10 July 2018

Japanese encephalitis is found mostly in Asia - from India in the west to North and South Korea, and Japan in the northeast. It is also found from Thailand, Singapore, and Malaysia in the south, to Indonesia, Timor, and Papua New Guinea in the southeast.

Only five cases have been identified as acquired in Australia; and none have been identified since 1998. All other cases diagnosed in Australia have been acquired overseas. 


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Sources & Citations

  1. Centers for Disease Control and Prevention. Japanese Encephalitis. Available at: (accessed 28 March 2018).
  2. Centers for Disease Control and Prevention. Japanese Encephalitis Prevention. Available at: (accessed 2 April 2018).

SPANZ.IMOJ.18.04.0141a - Date of preparation May 2018