Table III.
Seroconversion incidence rates and residual risks of transfusion-transmitted infection in the blood supply associated with window-period donations by converting donors.
| Incidence rates of seroconversion associated with each of three blood-borne pathogens | Residual risks of transfusion-transmitted infection in the blood supply associated with window-period donations by seroconverting donors | ||||
|---|---|---|---|---|---|
|
| |||||
| Infection | N. of seroconversions | N. of person-years | Incidence rate per 100,000 person-years | Length of window period (days) | Estimate of residual risk |
| HIV | 29 | 27,033 | 107.3 | 21 | 1 in 15,462 |
| HBV | 14 | 27,019 | 348.4 (52*) | 59 | 1 in 1,775.7 |
| HCV | 31 | 27,015 | 115 | 66 | 1 in 4,808 |
*
Incidence rate before correcting to account for the transient antigenemia.