“Finally!” Egale Canada wrote on Twitter. It also asks potential donors if they have been tattooed or engaged in intravenous drug use, as a way to help prevent diseases, including HIV, being transmitted through a transfusion. The federal blood agency said focusing on sexual behaviour, not orientation, will allow it to more reliably assess the risk of infections, such as HIV, that can be transmitted through transfusions. This advertisement has not loaded yet, but your article continues below.