Transfusion transmitted infections are major problem associated with blood transfusion. Accurate estimates of risk of TTIs are essential for monitoring the safety of blood supply and evaluating the efficacy of currently employed screening procedures. The present study was carried out to assess the percentage of voluntary donors and replacement donors and to find out prevalence and changing tren...

Torque teno virus (TTV) is a non-enveloped human DNA virus isolated by Nishizawa et al. in 1997.1 TTV, recently classified as the Alphatorquevirus genus within the Anelloviridae family by the International Committee on Taxonomy of Viruses (ICTV), was the first human virus with a single-stranded circular DNA genome to be identified.2 Thus far, five main genetic groups (Groups 1–5) involving at l...

Background Periodontitis and atherosclerosis represent a chronic inflammatory process. The incidence of periodontitis in cardiac patients with atherosclerosis is a well-established fact. The role of viruses in the etiopathogenesis of both has been proposed. Aim The aim of the study was to evaluate the prevalence of Torque Teno virus (TTV), Epstein-Barr virus (EBV), and cytomegalovirus (CMV) i...

Using the PCR assay, we found a high prevalence of TT virus (TTV) DNA in saliva and semen from patients who were seropositive for TTV. This finding suggests that the presence of TTV in body fluids other than serum may affect the routes of viral transmission.

TT virus (TTV) was first described in 1997 by representational difference analysis of sera from non-A to non-G posttransfusion hepatitis patients and hence intensively investigated as a possible addition to the list of hepatitis-inducing viruses. The TTV genome is a covalently closed single-stranded DNA of approximately 3.8 kb with a number of characteristics typical of animal circoviruses, esp...

background: unsafe transfusion practices put patients at high risk of transfusion transmissible infections. we aimed to evaluate the prevalence of transfusion transmissible infections (including human immunodeficiency virus [hiv] 1 and 2, hepatitis b virus [hbv], hepatitis c virus (hcv) and syphilis) during a period of 18 months among blood donors in the blood bank of lady hardinge medical coll...

TT virus (TTV) is a newly described DNA virus of humans that exhibits an unusually high degree of genetic heterogeneity. We have performed extensive analysis of the TTV populations present in samples, taken over a period of 2 to 6 years, from three individuals with persistent TTV infection. TTV DNA titres estimated for sequential samples were found to be quite stable over the entire study perio...

BACKGROUND & OBJECTIVES TT virus (TTV) is a newly discovered non-enveloped, single stranded DNA virus of high genotypic variability, found frequently in patients with acute or chronic hepatitis of non A-G aetiology. This study was carried out to look for the presence of TTV and its genotypes in patients with different types of liver diseases from northern India. METHODS A total of 262 serum s...

A new group of transmissible single-stranded (ss) DNA viruses (SENV) distantly related to the large TT virus (TTV) family was recently identified. Eight different SENV isolates have been found, some with an association with posttransfusion hepatitis. A phylogenetic analysis of near-complete open-reading frame 1, including conserved motifs and excluding recombinant regions, was performed. The an...