Japanese encephalitis virus — veterinary vaccines

These are animal vaccines. None of them is a vaccine for people. Every product on these pages is authorised for the animal species named in its row, by the UK Veterinary Medicines Directorate. A product licensed for cattle or poultry says nothing about whether protection exists for a person, and several of these viruses do not infect people at all.

Looking for human vaccines? Use the main Virus Navigator.

At a glance

Abbreviation	JEV
ICTV species	Orthoflavivirus japonicum
Family	Flaviviridae
Baltimore class	IV — (+)ssRNA
Human infection	Human infection recorded; pattern not classified

Also called: Orthoflavivirus japonicum

Riboviria › Kitrinoviricota › Flasuviricetes › Amarillovirales › Flaviviridae › Orthoflavivirus

What it is

Taxonomy copied from ICTV MSL41.v1 / VMR_MSL41.v1.20260729.xlsx. These ranks are not hand-edited; a correction means re-running the fetch against a newer release.

Realm	Riboviria
Kingdom	Orthornavirae
Phylum	Kitrinoviricota
Class	Flasuviricetes
Order	Amarillovirales
Family	Flaviviridae
Genus	Orthoflavivirus
ICTV identifier	ICTV19710103
NCBI taxon	3048158
Exemplar isolate	M18370

Host evidence

human: 372 GenBank records
pig: 382 GenBank records
cattle: 10 GenBank records

Counts of nucleotide records annotated with that host. Evidence of provenance, not a statement of host range.

Where it occurs

01–1011–100101–1,0001,001–10,000over 10,000not in the reporting set

Cases of Japanese encephalitis reported to WHO by national authorities, latest year 2025. Reported cases undercount true infections, and a zero can mean elimination or simply that nobody reported — each country page carries a data-quality grade saying which. This is occurrence as reported, not a modelled distribution.

What it does

Not searched yet. Burden, severity and transmissibility figures have not been curated for this virus yet. The disease-risk page already carries quoted figures for it.

Vaccines

Not searched yet. No vaccine for this virus appears in the vaccine pipeline dataset. That dataset tracks candidates and licensed products the site follows; it is not a complete register of every licensed vaccine, so this is not evidence that none exists.

Antivirals

Not searched yet. No US-approved antiviral for this virus was found in the openFDA drug label endpoint. Only US labels were searched, and only drugs the FDA classes as antivirals.

Antibodies and immune globulins

Not searched yet. No US-approved antiviral antibody for this virus was found in the openFDA drug label endpoint.

Approval status is not a treatment recommendation. Dosing and eligibility are on the label and in national guidelines. This page does not give medical advice and does not render dosing. A development stage is not a measure of how well something works.

Disease risk and vaccine efficacy — burden figures and trial results, each quoted from its source
Japanese Encephalitis vaccine — ingredients, schedule and reported side effects
Vaccine pipeline — candidates listed under “Japanese encephalitis”
Other Flaviviridae viruses
The human page for this virus — people, kept separate on purpose

← All viruses · Countermeasure gaps