|Blood Transfusion Services Impact Model and Manual (UNAIDS, 1999, 29 p.)|
|1. Introduction to Blood 3.0 and project|
· A model of the impact of the strengthening of blood transfusion products that can be used to obtain:
- Estimates of the number of HIV infections averted and surviving to discharge among under fives
- Estimates of the number of HIV infections averted and surviving to discharge among women
- Estimates of the number of HIV infections averted and surviving to discharge among men.
· Blood 3.0 incorporates a range of intervention specific inputs, which enable the user to explore the impact of different forms of intervention activity related to blood collection, testing and transfusion, on the number of HIV infections averted.
· Blood 3.0 aims to use the forms of epidemiological and intervention process and outcome data that are commonly collected by blood transfusion services.
· Blood 3.0 is a self-contained piece of computer software, that aims to be sufficiently user-friendly for it to be used by broad range of individuals concerned about the transmission of HIV infection through the provision of infected blood products.
The model considers ways in which an intervention may alter patterns of HIV transmission by:
· Reducing the volume of blood required, (by reducing un-necessary transfusions, or using alternatives to blood products);
· Reduce the prevalence HIV infection in the blood collected - by collecting blood from lower risk donors;
· Increase and improve HIV testing facilities - by possibly increasing the proportion of blood that is HIV tested, and increasing the sensitivity and specificity of the blood transfused;
· Reduce blood wastage - by increasing the flow of blood within the system.