“…Besides HBV infection, a large number of infectious agents, mostly viruses including EBV, CMV, respiratory syncytial virus and parainfluenza virus have been described as causative (table 1). Preceding immunization is also believed to be an etiological factor for GCS, and the association has been reported several times in the literature [3, 4, 5, 6, 7, 8, 9, 10, 11](table 2). However, in most of these reports there was also concurrent evidence of viral infections [4, 6, 8].…”