<unk>  is an alphavirus with a positive sense single-stranded RNA genome of approximately 11.6kb. It is a member of the Semliki Forest Virus complex and is closely related to Ross River Virus, O’Nyong Nyong virus and Semliki Forest Virus. In the United States it is classified as a Category C priority pathogen and work requires Biosafety Level 3 precautions.  Human epithelial, endothelial, primary fibroblasts and monocyte-derived macrophages are permissive for<unk>  in vitro and viral replication is highly cytopathic but susceptible to type I and II interferon. In vivo,<unk>  appears to replicate in fibroblasts, skeletal muscle progenitor cells and myofibers.
Chikungunya virus
Dengue virus
Zika virus
Borrelia
Ebola virus
Kunjin virus
Eastern equine encephalitis virus
West nile virus