raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:83484

St. Louis encephalitis

Synonyms: Saint Louis encephalitis

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

An acute arboviral infection caused by a virus of the <i>Flaviviridae</i> family transmitted by an infected mosquito, and characterized by the onset of flu-like symptoms such as fever, malaise, headache, cough, and sore throat that can progress to meningitis or encephalitis with symptoms like nausea, vomiting, confusion, stiff neck, disorientation, irritability, tremors, and convulsions. Photophobia, cranial nerve palsies, and even coma may occur.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enSt. Louis encephalitisSaint Louis encephalitis
frEncéphalite de St. LouisEncéphalite de Saint-Louis
deSt.-Louis-Enzephalitis
esEncefalitis de St. Louis
itEncefalite di St Louis
nlSaint Louis-encefalitis
ptEncefalite de St. Louis
plZapalenie mózgu St. LouisZapalenie mózgu Saint Louis
csEncefalitida St. LouisSaint Louis encefalitida · Saintlouiská encefalitida
ukЕнцефаліт Сент-ЛуїсаЕнцефаліт Сент-Луїса
zh圣路易斯脑炎圣路易斯脑炎
trSt. Louis ensefalitiSaint Louis ensefaliti

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10A83.3NTBTattributedvalidated
ICD-111C86Especificvalidated
MONDO0005969Evalidated
MeSHD004674Evalidated
UMLSC0014060Evalidated
MedDRA10041896Evalidated

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 incidence1-9 / 1 000 0000.38 / 100 000EuropeValue and classNot yet validatedORPHANET
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.

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Sources for this card