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Infectious risks of blood transfusion.

¹Yamins 309, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA. luhl@caregroup.harvard.edu

Current Hematology Reports

|August 7, 2003

Summary

Blood safety has dramatically improved, with HIV transmission risk now 1 in 1 million. New research focuses on preventing transfusion-transmitted bacteria, parasites, and prions.

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Area of Science:

Transfusion Medicine
Infectious Disease Transmission
Public Health

Background:

Public demand for a zero-risk blood supply intensified after HIV transmission events.
Significant advancements in donor selection, testing, and processing have reduced viral risks.

Purpose of the Study:

To review the impact of safety measures on transfusion-transmitted viral infections.
To address emerging concerns about non-viral infectious agents in transfused blood.

Main Methods:

Analysis of changes in blood donor screening and processing protocols.
Review of epidemiological data on transfusion-transmitted infections.
Examination of ongoing research into novel infectious agents.

Main Results:

Human Immunodeficiency Virus (HIV) transmission risk is now approximately 1 in 1 million units.
Risks associated with other transfusion-transmitted viral infections have also been substantially reduced.

Conclusions:

Current blood safety strategies have markedly decreased viral transmission risks.
Further research is critical to identify and mitigate risks from bacteria, parasites, and prions in blood transfusions.

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