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Estimated risk of transmission of hepatitis C virus by blood transfusion
K Koerner1, M Cardoso, T Dengler
1German Red Cross Blood Donation Service Baden-Württemberg, Germany.
Objective:
The risk of transmitting hepatitis C (HCV) by transfusion of anti-HCV-negative screened blood was estimated for the blood donor population of Baden-Württemberg (southwestern Germany).
Methods:
The data from the blood donors screened for anti-HCV and for HBsAg during 1990-1995 were analyzed.
Results:
The prevalence of confirmed anti-HCV -positive blood donations decreased continuously during the last 5 years, reaching 121 per 100,000 blood donations. A higher anti-HCV prevalence rate was found in female than in male blood donors (p < 0.05). The estimated risk of transmitting HCV during the window period is 1:200,000 (1:97,000-1:1,400,000) for repeat donors. In 1995, the calculated risk for first-time donors was 1:20,000 (1:15,000-28,000). The incidence for HCV was 1.2 per 100,000 blood donations.
Conclusion:
The risk of transmitting hepatitis C by blood transfusion is low. Additional tests to shorten the window period to detect antibodies to HCV might increase the safety of blood transfusion.
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