Japanese Encephalitis
Also known as: JE, Brain Fever
Category: InfectiousICD-10: A83.0
Japanese encephalitis is a mosquito-borne viral infection of the brain, seen in parts of India, especially rural rice-growing areas.
Symptoms
- Fever
- Headache
- Vomiting
- Confusion
- Seizures
Causes
- JE virus spread by Culex mosquitoes
Risk factors
- Living in endemic districts
- Children
Complications
- Brain damage
- Death
Treatment overview
Hospital supportive care; no specific antiviral.
Prevention
- JE vaccine in endemic districts
- Mosquito protection
When to see a doctor
Urgently for fever with confusion or fits.
Tests used
Vaccines
Specialists who treat it
Frequently asked questions
What are the symptoms of Japanese Encephalitis?
Fever, Headache, Vomiting, Confusion, Seizures
What causes Japanese Encephalitis?
JE virus spread by Culex mosquitoes
How is Japanese Encephalitis treated?
Hospital supportive care; no specific antiviral.
How can Japanese Encephalitis be prevented?
JE vaccine in endemic districts, Mosquito protection
Medically reviewed by
Medical review pending
Last updated
9 October 2026
Sources
- World Health Organization fact sheets
- ICMR and MoHFW national guidelines
- National Centre for Disease Control (NCDC)
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.