Japanese encephalitis virus disease
Japanese encephalitis virus disease clinical and global spread profile: 4 countries, 4 WHO outbreak events since 1996.
Japanese encephalitis virus disease · ICD-10 A830 · ICD-11 1C85 · 4 WHO events across 4 countries (1996–2022).
Top affected countries
| Country | Region | Events | % of global |
|---|---|---|---|
| India | SEAR | 1 | 25% |
| Australia | WPR | 1 | 25% |
| Nepal | SEAR | 1 | 25% |
| Malaysia | WPR | 1 | 25% |
Annual outbreak timeline
| Year | Events | Countries |
|---|---|---|
| 2022 | 1 | 1 |
| 2005 | 1 | 1 |
| 1999 | 1 | 1 |
| 1996 | 1 | 1 |
Peak year: 2022 (1 events).
Decade summary
| Decade | Events |
|---|---|
| 1990s | 2 |
| 2000s | 1 |
| 2020s | 1 |
WHO case definition
A disease of the brain, caused by an infection with flavivirus. This disease is characterised by fever, headache, meningism, hyperexcitability, or decreased consciousness. This disease may also present with neurological signs such as cranial nerve palsies, tremor and ataxia, parkinsonism, or upper limb paralysis. Transmission is through the bite of an infected mosquito. Confirmation is by identification of flavivirus in a serum sample or cerebrospinal fluid.
Countries Affected
4
Outbreak Events
4
Year Range
1996–2022
ICD-10 A830
Japanese encephalitis virus disease
Visualization
Global Prevalence Snapshot
Based on WHO Disease Outbreak News events (1996–2022).
Risk Level
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