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Viral risks associated with blood transfusion

E M Sloand1

  • 1National Heart, Lung, and Blood Institute, Bethesda, MD, USA.

Photochemistry and Photobiology
|March 1, 1997
PubMed
Summary

Blood supply safety has greatly improved with advanced infectious agent testing and donor screening, significantly lowering transfusion-transmitted disease risks. Ongoing public concern drives the need for methods to inactivate viruses in blood products.

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Area of Science:

  • Transfusion Medicine
  • Infectious Disease Prevention
  • Public Health

Background:

  • Significant advancements in blood supply safety have been achieved over the past decade.
  • Improved donor screening and infectious agent testing have drastically reduced transfusion-transmitted disease risks.
  • Current estimates indicate a very low risk for human immunodeficiency virus (HIV) and hepatitis B transmission.

Purpose of the Study:

  • To address persistent public concerns regarding blood transfusion safety.
  • To explore the development of methods for virus removal or inactivation in cellular blood products.
  • To mitigate risks associated with emerging infectious agents and evolving donor population dynamics.

Main Methods:

  • Implementation of seven specific tests for detecting infectious agents in donated blood.
  • Rigorous questioning of prospective donors regarding risk factors for transfusion-transmitted diseases.
  • Permanent deferral of donors testing positive for specific viral infections.

Main Results:

  • The risk of receiving a human immunodeficiency virus (HIV)-infected unit is estimated at 1 in 493,000.
  • The risk of receiving a hepatitis B-infected unit is estimated at 1 in 63,000.
  • Potential shifts in donor population risk factors could alter current transmission risk estimates.

Conclusions:

  • While blood transfusion is safer than ever, public apprehension persists.
  • The emergence of new viral strains necessitates continuous improvement in blood safety measures.
  • Development of effective virus inactivation methods for cellular blood products is crucial for future safety assurance.

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