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Japanese encephalitis in India (Assam)

25 Jul 2022

Indian media quoting the National Health Mission have reported 251 cases (including 38 deaths) of Japanese encephalitis in Assam in the first 3 weeks of July 2022. The disease has been reported in more than 20 of Assam’s 35 districts.

Japanese encephalitis is an infection spread from animals (mainly pigs or birds) to humans through mosquito bites. The infection can cause inflammation of the brain. The mosquito that spreads the infection bites people mostly in the evening hours.

Advice for Travellers

The risk for most travellers to countries which are endemic or with an outbreak of Japanese encephalitis is very small. This risk is greater if you will be:

  • travelling to remote or rural areas during transmission seasons
  • participating in outdoor activities especially around pig farms, rice fields or wetlands where the mosquitoes feed (bite) during evening hours
  • travelling to a risk area for a prolonged period of time

The best way to protect yourself against Japanese Encephalitis is by avoiding mosquito bites, especially in the evening when this mosquito is most active.

Before you travel, consider how you will protect yourself from mosquito bites during your trip. This involves:

You should also be aware of how to treat bites if they occur.

A vaccination against Japanese encephalitis is available for those considered to be at high risk.

For further information, see the Japanese Encephalitis page.