Volume 50, Issue 8 pp. 1712-1721
TRANSFUSION COMPLICATION

Parvovirus B19 infection transmitted by transfusion of red blood cells confirmed by molecular analysis of linked donor and recipient samples

Mei-ying W. Yu

Mei-ying W. Yu

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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Harvey J. Alter

Harvey J. Alter

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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Maria Luisa A. Virata-Theimer

Maria Luisa A. Virata-Theimer

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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Yansheng Geng

Yansheng Geng

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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Li Ma

Li Ma

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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Cathy A. Schechterly

Cathy A. Schechterly

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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Camilla A. Colvin

Camilla A. Colvin

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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Naomi L.C. Luban

Naomi L.C. Luban

From the Division of Hematology, Center for Biologics Evaluation and Research (CBER), FDA, and the Department of Transfusion Medicine, Warren Grant Magnuson Clinical Center, NIH, Bethesda, Maryland; and the Division of Laboratory Medicine, Children's National Medical Center, Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

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First published: 02 August 2010
Citations: 40
Mei-ying W. Yu, PhD, Division of Hematology, HFM-345, CBER, FDA, Room 303, 29 Lincoln Drive, Bethesda, MD 20892; e-mail: [email protected].

The findings and conclusions in this article have not been formally disseminated by the FDA and should not be construed to represent any Agency determination or policy.

The study was funded in part by a grant from the NIH and in part by the Intramural Research Program of the NIH Clinical Center and that of CBER, FDA.

Abstract

BACKGROUND: Extremely high viremic levels of parvovirus B19 (B19V) can be found in acutely infected, but asymptomatic donors. However, reports of transmission by single-donor blood components are rare. In this prospective study, paired donor-recipient samples were used to investigate the transfusion risk.

STUDY DESIGN AND METHODS: Posttransfusion plasma or blood samples from recipients were tested for B19V DNA by polymerase chain reaction, generally at 4 and 8 weeks, and for anti-B19V immunoglobulin (Ig)G by enzyme immunoassay, at 12 and 24 weeks. To rule out infection unrelated to transfusion, pretransfusion samples and linked donor's samples for each B19V DNA–positive recipient were assayed for B19V DNA and anti-B19V IgG and IgM. To confirm transmission, sequencing and phylogenetic analysis were performed.

RESULTS: A total of 14 of 869 (1.6%) recipients were B19V DNA positive, but only 1 of 869 (0.12%; 95% confidence interval, 0.0029%-0.6409%) was negative for B19V DNA and anti-B19V IgG before transfusion and seroconverted posttransfusion. This newly infected patient received 5 × 1010 IU B19V DNA in one red blood cell (RBC) unit from an acutely infected anti-B19V–negative donor in addition to RBCs from three other donors that cumulatively contained 1320 IU of anti-B19V IgG. DNA sequencing and phylogenetic analysis showed that sequences from the linked donor and recipient were identical (Genotype 1), thus establishing transfusion transmission.

CONCLUSIONS: The 0.12% transmission rate documented here, although low, could nonetheless result in hundreds or thousands of infections annually in the United States based on calculated confidence limits. Although most would be asymptomatic, some could have severe clinical outcomes, especially in neonates and those with immunocompromised or hemolytic states.

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