When is Japanese encephalitis virus transmission season?
In temperate areas of Asia, JE virus transmission is seasonal. Human disease usually peaks in the summer and fall. In the subtropics and tropics, transmission can occur year-round, often with a peak during the rainy season.
When was the last Japanese encephalitis outbreak?
An Outbreak of Japanese Encephalitis in Adults in Northern China, 2013: A Population-Based Study. State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
Where is Japanese encephalitis most common?
Japanese encephalitis is a viral brain infection that’s spread through mosquito bites. It’s most common in rural areas in southeast Asia, the Pacific islands and the Far East, but is very rare in travellers.
How many cases per year of Japanese encephalitis occur?
About 68,000 cases of Japanese encephalitis (JE) are estimated to occur each year. JEV is endemic throughout most of Asia and parts of the western Pacific. For travelers to Asia, the risk of JE is very low but varies based on season, destination, duration, and activities [3].
When was encephalitis first discovered?
Eastern equine encephalitis (EEE) virus was first discovered in 1933 during a large-scale equine epizootic in the mid-Atlantic region of the United States. Fatal encephalitis in humans soon followed during a 1938 outbreak of EEE in southeastern Massachusetts involving 34 cases in humans and 25 deaths.
When was Japanese encephalitis discovered?
The first case of Japanese encephalitis viral disease (JE) was documented in 1871 in Japan. The annual incidence of clinical disease varies both across and within endemic countries, ranging from <1 to >10 per 100 000 population or higher during outbreaks.
How long does Japanese encephalitis last?
How long does the Japanese encephalitis vaccination last? The duration of protection is unknown. A booster dose may be given if the primary two-dose vaccination series was given one year or more previously and there is continued risk of exposure.
Why is it called Japanese encephalitis?
Japanese encephalitis (JE) is an infection of the brain caused by the Japanese encephalitis virus (JEV)….
| Japanese encephalitis | |
|---|---|
| Other names | Japanese B encephalitis |
| The geographic distribution of Japanese encephalitis (dark green) | |
| Specialty | Infectious disease |
| Symptoms | Headache, fever, vomiting, confusion, seizures |
