Wetland virus or WELV is a tick borne Orthonairovirus which can infect humans. It can produce fever, headache, dizziness, malaise, arthritis and less commonly petechiae, localized lymphadenopathy. Complications may include neurological symptoms.[1]
The Wetland virus orthonairovirus (WELV) is a member of the genus Orthonairovirus, family Nairoviridae[1] of RNA viruses. It was first identified in 2019 in a Chinese person in Jinzhou, Liaoning province Northeast China after a visit to a wetland park in Yakeshi, Inner Mongolia. Three different strains were identified one from the patient and two from ticks.[1]
Its sequence is most similar to the Tofla virus from Japan.[1]
Hosts and transmission
The Wetland virus was found in mice, sheep, pigs, and horses, but not dogs or cattle. It was found in about 2% of 14,500 different ticks in Northeast China with the highest prevalence (6%) in Haemaphysalis concinna.[1]
Experimental infection showed that WELV caused lethal disease even in immunocompetent mice, unlike the remainder of the viruses in Nairoviridae family.[1]
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