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Related Concept Videos

Blood Transfusion01:15

Blood Transfusion

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Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
Blood Transfusion Overview
A blood transfusion is a medical procedure used to replace blood lost due to injury, surgery, or to treat conditions such as anemia or cancer. During a transfusion, donor blood is...
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Related Experiment Video

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A Competent Hepatocyte Model Examining Hepatitis B Virus Entry through Sodium Taurocholate Cotransporting Polypeptide as a Therapeutic Target
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Efficacy of Different Testing Scenarios in Reducing Transfusion-Transmitted Hepatitis B Virus (TT-HBV) Infection

Nico Lelie1, Michael Busch2, Steven Kleinman3

  • 1Lelie Research, 1811 DK Alkmaar, The Netherlands.

Viruses
|October 27, 2022
PubMed
Summary

Modeling shows that individual donation nucleic acid amplification testing (ID-NAT) alone significantly reduces hepatitis B virus (HBV) transmission risk, offering an alternative to complex screening algorithms for blood donations.

Keywords:
HBV transmissionefficacyresidual riskscreening scenarios

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Area of Science:

  • Transfusion Medicine
  • Virology
  • Public Health

Background:

  • Hepatitis B virus (HBV) remains a significant risk in blood transfusions.
  • Current screening strategies involve multiple tests like HBsAg and nucleic acid amplification testing (NAT).
  • Optimizing screening protocols is crucial for blood safety.

Purpose of the Study:

  • To model and compare the efficacy of various screening scenarios in reducing HBV transmission risk.
  • To evaluate different combinations of hepatitis B surface antigen (HBsAg), anti-HBc, and individual donation nucleic acid amplification testing (ID-NAT) sensitivities.
  • To assess the effectiveness of minipool (MP) and ID-NAT testing strategies.

Main Methods:

  • Utilized a large dataset of 9,337,110 donations from four geographical regions.
  • Employed Weusten models to estimate infectivity risk for Red Blood Cell (RBC) transfusions across eight HBV infection stages.
  • Modeled multiple screening strategies including HBsAg, anti-HBc, and various ID-NAT and MP-NAT sensitivities.

Main Results:

  • Screening scenarios reduced HBV transmission risk between 81% (HBsAg only) and 99.2% (ID-NAT and anti-HBc).
  • Highly sensitive ID-NAT alone achieved a risk reduction of 97.6–99.0%.
  • HBsAg testing provided minimal additional risk reduction (<0.1%) in ID-NAT screened lapsed and repeat donors.

Conclusions:

  • ID-NAT alone is a viable alternative to multi-test algorithms (MP-NAT and serology) for reducing HBV transmission risk.
  • Restricting serologic testing (HBsAg, anti-HBc) to first-time donors may be sufficient when combined with ID-NAT.
  • This modeling supports simplified yet effective screening protocols for enhanced blood safety.