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How Japanese encephalitis can be prevented?

Page last updated 03 April 2020

There are two main methods for preventing infection with Japanese encephalitis: vaccination and avoiding mosquito bites.

The Australian Government recommends vaccination for people (older than 1 year) traveling for one month or longer to high-risk countries. This especially if travelling in the wet season, participating in any outdoor activities, or visiting rural areas. Vaccination should be completed at least 1-2 weeks before travelling. For further information regarding vaccination, speak with your healthcare professional.

Recommended ways to decrease the likelihood of mosquito bites include:

  • Wearing loose-fitting, long-sleeved shirts and long pants
  • Using high strength mosquito repellent on exposed skin and clothes
  • Being extra vigilant from dusk to dawn (peak mosquito biting hours for species which transmit Japanese encephalitis)
  • Removing or covering still water, e.g. water buckets
  • Ensuring windows and doors are closed or screened
  • Using a mosquito net over sleeping areas, and spraying it with mosquito repellent or insecticide.

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Sources & Citations

1. Australian Government, Department of Health. The Australian Immunisation Handbook. Japanese encephalitis. Available at: (accessed 10 March 2020).

2. NSW Government, Department of Health. Japanese encephalitis fact sheet. Available at; (accessed 10 March 2020).

9. Centers for Disease Control and Prevention. Chapter 4 – Travel-related infectious diseases - Japanese Encephalitis. Available at: (accessed 10 March 2020).

10. Centers for Disease Control and Prevention. Japanese encephalitis – prevention. Available at: (accessed 10 March 2020).

SPANZ.IMOJ.18.04.0141(1)a - Date of preparation March 2020