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.

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.

[1] The Wetland virus was found in mice, sheep, pigs, and horses, but not dogs or cattle.

[1] Experimental infection showed that WELV caused lethal disease even in immunocompetent mice, unlike the remainder of the viruses in Nairoviridae family.