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Efficacy of individual nucleic acid amplification testing in reducing the risk of transfusion‐transmitted hepatitis B virus infection in Switzerland, a low‐endemic region

BACKGROUND: The risk of transfusion‐transmitted hepatitis B virus (HBV) in Switzerland by testing blood donors for hepatitis B surface antigen (HBsAg) alone has been historically estimated at 1:160,000 transfusions. The Swiss health authorities decided not to introduce mandatory antibody to hepatitis B core antigen (anti‐HBc) testing but to evaluate the investigation of HBV nucleic acid testing (NAT).