Frequency of TTV DNA in the Sera of 93 Transfusion-Dependent β-Thalassemic Patients
| At Baseline (1992-1993) . | End of Follow-up (1995-1996) . | ||
|---|---|---|---|
| TTV DNA . | No. of Patients . | TTV DNA . | No. of Patients . |
| Positive* | 87 | Positive | 84 |
| Negative | 3 | ||
| Negative | 6 | Positive | 3 |
| Negative | 3 | ||
| At Baseline (1992-1993) . | End of Follow-up (1995-1996) . | ||
|---|---|---|---|
| TTV DNA . | No. of Patients . | TTV DNA . | No. of Patients . |
| Positive* | 87 | Positive | 84 |
| Negative | 3 | ||
| Negative | 6 | Positive | 3 |
| Negative | 3 | ||
Patients were enrolled in the Cooleycare program, a cooperative program established in 1989 to improve the treatment quality of β-thalassemia.
Results were confirmed by repeated (2-3 times) testing by PCR and all PCR products were sequence confirmed.