Wetland virus
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] VirologyThe 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 NorthEastern 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 transmissionThe 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] Signs and symptomsSymptoms of infection with the Wetland virus are fever, headache, dizziness, malaise, myalgia (muscle pain), arthritis, and back pain. Less commonly there are petechiae and localized lymphadenopathy.[1] One person also had severe neurological symptoms, but all recovered without sequelae.[1] Symptoms and signs resemble those of Crimean–Congo hemorrhagic fever, and the differential diagnosis includes severe fever with thrombocytopenia syndrome and spotted fever.[1] References
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