| Co-factors | Blood transfusion | AIDS symptoms | OIs |
| Ottawa Citizen. Ottawa orders blood agencies to buy new filters. | 1 | ||
| “…newly updated filters…virtually eliminate those white cells from donated blood will help end side-effects that tend to suppress the immune system. They include severe fever and chills, serious post-surgery infections, recurrence of cancer and unsuccessful bone marrow transplants [indicating that ill effects can occur from blood transfusions, whether HIV-infected or not]” | |||
| Calgary Herald. 1998 Nov. 4;A5. | 1998 | ||