Where Is Encephalitis Found?

Encephalitis (en-sef-uh-LIE-tis) is inflammation of the brain. There are several causes, but the most common is a viral infection. Encephalitis often causes only mild flu-like signs and symptoms — such as a fever or headache — or no symptoms at all. Sometimes the flu-like symptoms are more severe.

Where is encephalitis most commonly found in the world?

Japanese encephalitis, which is also transmitted by mosquito, is the most common form of viral encephalitis outside of the United States. It is endemic in rural areas in east, south, and southwest Asia, especially China and Korea. Venezuelan equine encephalitis is found in South and Central America.

What is the most common encephalitis?

Encephalitis is most often due to a virus, such as:
  • herpes simplex viruses, which cause cold sores and genital herpes (this is the most common cause of encephalitis)
  • the varicella zoster virus, which causes chickenpox and shingles.
  • measles, mumps and rubella viruses.
David Miller

David Miller

Executive Financial & Market Analyst

David Miller brings 15 years of experience in global economics, personal finance strategy, and market dynamics. He specializes in turning complex economic trends into actionable insights for everyday readers.