Virus
Japanese encephalitis virus
Culex flavivirus, pigs and birds, Asia
jap-uh-NEEZ en-sef-uh-LY-tis VY-rus
High-yield clue
Culex-transmitted flavivirus with pigs as amplifying host; the classic clue is epidemic viral encephalitis across Asia.
Overview
A positive-sense single-stranded RNA flavivirus transmitted by Culex mosquitoes in an enzootic cycle involving pigs and wading birds, studied as a leading cause of viral encephalitis in Asia.
Classification
- Flaviviridae
- Genus Orthoflavivirus
- Positive-sense ssRNA
- Enveloped
- Arbovirus
Lab & identification clues
- CSF antibody detection vocabulary
- Encephalitis study framing
- Vaccine-preventable arbovirus concept
Associations
- Culex mosquito vector
- Pigs as amplifying host and wading birds as reservoir
- Epidemic encephalitis vocabulary
- Rural rice-paddy Asia epidemiology
Commonly confused with
- West Nile virus
- Rabies virus
Frequently asked questions
What is Japanese encephalitis virus?
A positive-sense single-stranded RNA flavivirus transmitted by Culex mosquitoes in an enzootic cycle involving pigs and wading birds, studied as a leading cause of viral encephalitis in Asia.
What are the lab clues for Japanese encephalitis virus?
Lab clues for Japanese encephalitis virus include CSF antibody detection vocabulary, Encephalitis study framing, and Vaccine-preventable arbovirus concept.
What is Japanese encephalitis virus commonly confused with?
Japanese encephalitis virus is commonly confused with West Nile virus and Rabies virus.
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.