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Long-term parvovirus B19 viraemia associated with pure red cell aplasia after allogeneic bone marrow transplantation #MMPMID15288608
Plentz A; Hahn J; Holler E; Jilg W; Modrow S
J Clin Virol 2004[Sep]; 31 (1): 16-9 PMID15288608show ga
BACKGROUND: Parvovirus B19 infection is associated with a variety of symptoms like erythema infectiosum, anaemia and arthritis. In immunocompetent persons, viraemia is usually cleared a few weeks after infection. OBJECTIVE: An immunocompromised adult female patient was persistently infected with B19 after allogenic bone marrow transplantation (BMT) and developed chronic anaemia. STUDY DESIGN: B19-specific antibodies were determined by ELISA and viral load was assessed using a quantitative real time B19 PCR. The patient was evaluated clinically. RESULTS: Two years after successful BMT, the patient received intensified immunosuppressive treatment, erythropoetin and erythrocyte concentrates due to chronic graft-versus-host disease with renal failure. Despite of this treatment, the aplastic anaemia worsened. PCR revealed B19 viraemia with 10(12) geq/ml serum. After 7 months of repeated applications of immunoglobulins and reduction of immunosuppressive treatment, reticulocyte counts and haemoglobin levels normalized and the viral load finally dropped to 10(3) geq/ml serum. One of the back-up samples of the erythrocyte concentrates tested positive, the respective transfusion had been applied 2 months after the beginning of viraemia. CONCLUSIONS: The source of the primary infection remained unclear, but at least re-infection by blood transfusion is likely. Treatment did not result in virus elimination from peripheral blood but in resolvement of symptoms.
J+Clin+Virol 2004 ; 31 (1): 16-9
