Eyach virus (EYAV) is a viral infection (genus ''
Coltivirus
Coltivirus is a genus of viruses (belonging to the ''Reoviridae'' family) that infects vertebrates and invertebrates. It includes the causative agent of Colorado tick fever. Colorado tick fever virus can cause a fever, chills, headache, photopho ...
'') in the ''
Reoviridae'' family transmitted by a
tick
Ticks (order Ixodida) are parasitic arachnids that are part of the mite superorder Parasitiformes. Adult ticks are approximately 3 to 5 mm in length depending on age, sex, species, and "fullness". Ticks are external parasites, living by ...
vector. It has been isolated from ''Ixodes ricinus'' and ''I. ventalloi'' ticks in Europe.
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Transmission and clinical syndromes
Eyach virus is acquired by tick bite. The tick gets infected after a blood meal from a vertebrate host, which is suspected to be the European rabbit ''O. cunniculus.''
Eyach virus has been linked to
tick-borne encephalitis
Tick-borne encephalitis (TBE) is a viral infectious disease involving the central nervous system. The disease most often manifests as meningitis, encephalitis or meningoencephalitis. Myelitis and spinal paralysis also occurs. In about one third ...
, as well as polyradiculoneuritis and meningopolyneuritis, based on serological samples of patients with these neurological disorders.
References
Coltiviruses
Reoviruses
Zoonoses
Arthropod-borne viral fevers and viral haemorrhagic fevers
Tick-borne diseases
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