A new virus, Wetland Virus (WELV), has been discovered in Northeast China and can be transmitted to humans through tick bites, causing neurological diseases. The virus was first identified in a patient in Jinzhou City, Liaoning Province, in 2019 and has since been found in other regions and in various ticks and mammals. The virus can cause a range of symptoms in humans, from mild to severe, and can be fatal in mice. The research was conducted by the Institute of Microbiology and Epidemiology of the Chinese Academy of Military Medical Sciences and the Changchun Veterinary Research Institute.