“…It has also been shown that exposure to the highly pathogenic neurotropic H5N1 influenza virus increases susceptibility to developing PD with an observed onset of post-influenzal encephalopathies (Jang et al, 2009b). Other viruses associated with secondary Parkinsonism include coxsackie virus (Poser et al, 1969;Walters, 1960), Japanese encephalitis B (Ogata et al, 1997), St. Louis virus (Pranzatelli et al, 1994), west Nile virus (Robinson et al, 2003) and human immunodeficiency virus (HIV) (Tse et al, 2004). Infection with Japanese-encephalitis virus (JEV), which occurs predominantly in India, China and Southeast Asia, for a prolonged period is likely to induce PEP (Ogata et al, 2000;Shoji et al, 1993;Tansey et al, 2007).…”