Medical Definition of Alongshan Virus (ALSV)

Last Editorial Review: 6/10/2019

Alongshan virus: This is a segmented RNA virus first identified in 2017 in China. Alongshan virus (ALSV) belongs to the jingmenvirus group of the family Flaviviridae. In northern China, patients who had this viral infection also experienced fever and illness. Medical professionals believe the virus spreads via tick bites. In addition to fever and a history of tick bites, headache was a symptom of infection, similar to other tick-borne encephalitis virus infections.


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Wang, Ze-Dong, et al. "A New Segmented Virus Associated With Human Febrile Illness in China." NEJM 380 May 30, 2019: 2116-2125. <>.