Banna virus (BAV) is a virus belonging to Reoviridae, a family of segmented, non-enveloped, double-stranded RNA viruses.[1] It is an arbovirus, being primarily transmitted to humans from the bite of infected mosquitoes of the genus Culex.[2] Pigs and cattle have also been shown to become infected.[3] The most common symptom of infection is fever, but in some cases encephalitis may occur.[4] There is no specific treatment for infection, so treatment is aimed at alleviating the severity of symptoms until the immune system has cleared the infection.