raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:83594

Eastern equine encephalitis

Synonyms: Eastern equine encephalomyelitis

Type
Disease
Group
Disorder
Inheritance
Not applicable
Age of onset
All ages
Status
active

An acute arboviral infection caused by an <i>alphavirus</i> of the <i>Togaviridae</i> family transmitted by an infected mosquito, that is characterized by the onset of flulike symptoms including fever, chills, weakness, headache, vomiting, abdominal pain with diarrhea, myalgia, leucocytosis, and hematuria, rapidly progressing to diffuse central nervous system (CNS) involvement with confusion, somnolence, or even coma. Seizures, which may progress to status epilepticus and neurologic sequelae, cranial nerve palsies, and photophobia may occur. EEE is associated with a high rate of morbidity and mortality.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enEastern equine encephalitisEastern equine encephalomyelitis
frEncéphalite équine de l'estEncéphalomyélite équine de l'est
deÖstliche PferdeenzephalitisEastern-Equine-Encephalitis
esEncefalitis equina orientalEncefalomielitis equina oriental
itEncefalite equina dell'EstEncefalomielite equina dell'Est
nlOosterse paardenencefalitisOosterse equine encefalitis · Oosterse paardenencefalomyelitis
ptEncefalite equina orientalEncefalomielite equina oriental
plWschodnie końskie zapalenie mózguWschodnie końskie zapalenie mózgu i opon mózgowych
csVýchodní koňská encefalitidaVýchodní koňská encefalomyelitida
ukСхідний кінський енцефалітСхідний енцефаломієліт коней
zh东方马脑炎东部马脑脊髓炎
trDoğu at ensefalitiDoğu at ensefalomiyeliti

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10A83.2NTBTattributedvalidated
ICD-111C84Especificvalidated
MONDO0005736Evalidated
MeSHD020242Evalidated
UMLSC0153065Evalidated
GARD10821Evalidated
MedDRA10014587Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Annual incidence<1 / 1 000 0000.01 / 100 000United StatesValue and classValidatedCenter for Diseases Control and Prevention 1989-1996[OTHER]
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card