What is Ontario Transfusion Transmitted Injuries Surveillance System (TTISS-ON)? Ontario transfuses approximately 50% of blood components (red blood cells, platelets, plasma, cryosupernatant and cryoprecipate) in Canada, excluding Quebec. The Ontario Transfusion Transmitted Injuries Surveillance System (TTISS-ON), contracted by the Ministry of Health and Long-Term Care (MOH-LTC) … Continue reading ABOUT