W L Mengeling

National Institute of Allergy and Infectious Diseases, Maryland, United States

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Publications (1)3.53 Total impact

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    ABSTRACT: Porcine clotting factor has been used for more than 15 years to treat severe bleeding episodes in persons with hemophilia who have antibodies to human clotting factor. In 1996, QC procedures revealed for the first time the presence of porcine parvovirus (PPV) in the product. This report describes an investigation to determine the extent of product contamination and to evaluate past recipients of porcine clotting factor (Hyate:C, Speywood Biopharm) for evidence of PPV infection. Stored specimens from 22 lots of previously released Hyate:C were tested for the presence of PPV DNA by PCR and nested PCR assays. Serum specimens from 98 recipients of Hyate:C and 24 controls who did not receive Hyate:C were tested for PPV antibodies by an immunofluorescence assay. PPV DNA was detected in product from 21 of the 22 lots of Hyate:C, primarily by nested PCR testing. In contrast, none of the serum specimens from the 98 Hyate:C recipients tested positive for PPV IgG antibodies. The risk of human disease from percutaneous exposure to low levels of PPV seems to be low. Nevertheless, the theoretical risk of human infection with PPV has led to manufacturing changes, including PCR screening of all porcine plasma, which are designed to eliminate this risk.
    Transfusion 07/2000; 40(6):708-11. · 3.53 Impact Factor

Publication Stats

16 Citations
3.53 Total Impact Points

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Institutions

  • 2000
    • National Institute of Allergy and Infectious Diseases
      Maryland, United States
    • Centers for Disease Control and Prevention
      • National Center for Emerging and Zoonotic Infectious Diseases
      Druid Hills, GA, United States