A mother brings her 9 month old child for vaccination. Which of the following statements is false regarding immunization of Japanese encephalitis?
**Core Concept**
Japanese encephalitis (JE) is a flavivirus that causes severe inflammation of the brain, primarily transmitted through the bite of an infected Culex mosquito. The JE vaccine is a crucial tool in preventing this disease, especially in endemic areas.
**Why the Correct Answer is Right**
The JE vaccine is typically administered to children at 9-12 months of age, with a booster dose given 1 year later. This vaccine is usually given in combination with other vaccines, such as diphtheria, tetanus, and pertussis (DTP). The JE vaccine works by stimulating the body's immune system to produce antibodies against the JE virus, thereby preventing infection.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the JE vaccine is not live attenuated, unlike some other vaccines. The JE vaccine is inactivated, making it safe for administration to children.
**Option B:** This option is incorrect because the JE vaccine is not administered subcutaneously. Instead, it is typically given intramuscularly, usually in the deltoid muscle.
**Option C:** This option is incorrect because the JE vaccine is not contraindicated in children with a history of allergic reactions. However, precautions should be taken in children with a history of severe allergic reactions.
**Clinical Pearl / High-Yield Fact**
The JE vaccine is not effective against other flaviviruses, such as dengue fever or Zika virus, which are also transmitted by mosquitoes.
**Correct Answer:** C.