title: [TT virus: a human circular virus in search of a disease].
authors.affiliation: Servicio de Microbiología Diagnóstica, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid. jmecheva@isciii.es
authors.forename: J M
authors.initials: JM
authors.lastname: Echevarría
mesh_terms: D001782:Blood Donors; D001803:Blood Transfusion; D004266:DNA Virus Infections / Q000453:epidemiology / Q000821:virology*; D006525:Hepatitis, Viral, Human / Q000821:virology; D006801:Humans; D022783:Torque teno virus / Q000235:genetics / Q000302:isolation & purification / Q000472:pathogenicity