title: Recently discovered blood-borne viruses.
abstract: In recent years, molecular biology advances have enabled many investigators to discover a number of viruses that have been difficult to characterise by cell culture techniques. Two blood-borne viruses have been identified. These are GB virus C (GBV-C) and TT virus (TTV). GBV-C was discovered in 1995. It is a flavivirus-like enveloped particle measuring 50-100 nm in diameter with a density of 1.08-1.13 g/cm3. The genome of GBV-C is a single-stranded, positive strand ribonucleic acid of approximately 8600 nucleotides. The TTV was discovered in 1997. It is a circular single-stranded deoxyribonucleic acid virus, non-enveloped of approximately 3900 nucleotides. It has a density of 1.31-1.34 g/cm3 and a particle size of 30-50 nm. Both viruses are distributed widely throughout the world. Most GBV-C infections are asymptomatic, transient and self-limiting. To date, solid evidence for any association of TTV with disease has not been demonstrated.
authors.affiliation: Viral Discovery Group, Abbott Diagnostic Division, Abbott Laboratories, North Chicago, Illinois, USA.
authors.forename: I K
authors.initials: IK
authors.lastname: Mushahwar
authors.forename: J E
authors.initials: JE
authors.lastname: Erker
authors.forename: B J
authors.initials: BJ
authors.lastname: Dille
authors.forename: S M
authors.initials: SM
authors.lastname: Desai
mesh_terms: D017848:Blood-Borne Pathogens; D004279:DNA, Viral; D018178:Flaviviridae Infections / Q000150:complications / Q000821:virology; D029407:GB virus C / Q000235:genetics / Q000302:isolation & purification; D016679:Genome, Viral; D005838:Genotype; D006526:Hepatitis C / Q000150:complications; D006525:Hepatitis, Viral, Human / Q000150:complications / Q000821:virology; D006801:Humans; D008099:Liver / Q000821:virology; D016377:Organ Transplantation; D012367:RNA, Viral; D022783:Torque teno virus / Q000235:genetics / Q000302:isolation & purification
chemical_list: D004279:DNA, Viral; D012367:RNA, Viral