All are true about J.E. Except –
**Core Concept**
Japanese Encephalitis (JE) is a mosquito-borne viral encephalitis caused by the JE virus (JEV), a flavivirus transmitted primarily through the bite of an infected Culex mosquito. The virus targets the central nervous system, leading to inflammation of the brain (encephalitis).
**Why the Correct Answer is Right**
JE is a significant public health concern in Asia, particularly in rural areas where the disease is endemic. The virus is maintained in a cycle between mosquitoes and pigs, with humans acting as incidental hosts. The incubation period of JE ranges from 5 to 15 days, and symptoms can range from mild fever to severe encephalitis, which can be fatal.
**Why Each Wrong Option is Incorrect**
**Option A:** JE is not transmitted through ticks.
JE is primarily transmitted through the bite of an infected Culex mosquito, not ticks.
**Option B:** JE is not caused by a flavivirus.
JE is caused by the JE virus, a flavivirus, which is a type of RNA virus.
**Option C:** JE does not have a significant impact on public health.
JE is a significant public health concern in Asia, particularly in rural areas where the disease is endemic.
**Clinical Pearl / High-Yield Fact**
The JE vaccine is a live, attenuated vaccine that provides long-term immunity against the JE virus. It is recommended for individuals living in or traveling to endemic areas, particularly during peak transmission seasons.
**Correct Answer: A. JE is not transmitted through ticks.