West-Nile encephalitis

MONDO:0019376

An acute arboviral infection caused by a virus of the Flaviviridae family transmitted by an infected mosquito, that is asymptomatic in the majority of cases but that can present in rare occasions with mild flulike symptoms such as low-grade fever, arthralgia, myalgia, and/or rash, or with neurologic manifestations including meningitis, encephalitis with mental confusion or disorientation, tremors and acute flaccid paralysis/poliomyelitis.

Also known as: West Nile Encephalitis, West Nile encephalitis, West Nile fever with encephalitis, West Nile virus caused infectious encephalitis, West Nile virus infectious encephalitis, West-Nile fever

8 clinical trials for this condition and its sub-types, 1 tagged with West-Nile encephalitis itself.

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Where it sits in the disease tree

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Part of

↑ Mosquito-borne viral encephalitis (5) ↑ West Nile fever (1)

Sub-types of West-Nile encephalitis

Kunjin virus infectous disease 0 trials

Including sub-types (8) Tagged with West-Nile encephalitis (1)

Not yet finished but already full! 1

New west nile vaccine enters first human tests

Vaccine Ongoing

This early-stage trial is testing a new vaccine called HydroVax-001B WNV to see if it is safe and triggers an immune response against West Nile virus, a mosquito-borne disease. About 30 healthy adults aged 18 to 49 will receive either the vaccine or a placebo. The study will comp…

Phase 1 • Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) • Aim: Vaccine

Last updated Sep 20, 2026 00:00 UTC

West-Nile encephalitis

Where it sits in the disease tree

New west nile vaccine enters first human tests