Molecular detection of Torque teno mini virus (TTMV) in China

In this study, 176 serum specimens were collected from hospitalized cardiovascular diseases patients in Shanghai, China. 140 samples (79.5%) were positive with the primers located in non-coding region, and 30 samples (17.04%) were identified to be positive with group-specific primers. Of the 30 samples, 9 (5.11%) were classified to group 1, 23 (13.07%) were clustered to group 2, and 3 belonged to group 3. Five samples were confirmed to be dual infection with different groups of TTMV, and no sample was found to be infected with groups 4–6.