We report here the sequences of two reference strains of parvovirus B19 (B19V) used for quantitation of B19V DNA. One reference strain has been established by the World Health Organization (WHO) and the other by the European Pharmacopeia (Ph. Eur.) and belong to B19V genotype 1a1 and 1a2, respectively.

Parvovirus B19 is a common, clinically significant pathogen. Reassessment of the viral kinetics after acute infection showed that the virus is not rapidly cleared from healthy hosts, despite early resolution of symptoms. These findings challenge our current conception of the virus' pathogenesis and have implications for the management of the infection.

N Engl J Med 2004;350:586-97. Copyright © 2004 Massachusetts Medical Society. vonne cossart, an australian virologist working in london in the mid-1970s, noted an anomalous reaction of a normal blood donor’s serum (occupying position 19 in plate B) in an assay for hepatitis B. When Cossart excised the line of antigen–antibody precipitation, she saw the particles shown in Figure 1A, and in this ...

association between Still’s disease and B19 infection has been sug1. Mortimer PP, Humphries RK, Moore JG, Purcell RH, Young NS. A human gested [5] but also questioned [6]. To our knowledge, this is the parvovirus-like virus inhibits hematopoietic colony formation in vitro. first case of B19 infection associated with a combination of clinical Nature 1983;302:426–9. manifestations typical of Stil...

A novel conception of CD4(+) T cells with cytolytic potential (CD4(+) CTL) is emerging. These cells appear to have a part in controlling malignancies and chronic infections. Human parvovirus B19 can cause a persistent infection, yet no data exist on the presence of B19-specific CD4(+) CTLs. Such cells could have a role in the pathogenesis of some autoimmune disorders reported to be associated w...

OBJECTIVE To augment the understanding of parvovirus B19 infection in pregnancy with respect to maternal characteristics and their corresponding fetal outcomes. STUDY DESIGN Retrospective case-series of all women referred to Magee-Women_s Hospital with serologically-documented parvovirus B19 infection during pregnancy from 1998-2001. RESULTS All 25 cases that are available for analysis occu...

The introduction of dual viral inactivation of clotting factor concentrates has practically eliminated infections by viruses associated with significant pathogenicity over the last 20 years. Despite this, theoretical concerns about transmission of infection have remained, as it is known that currently available viral inactivation methods are unable to eliminate parvovirus B19 or prions from the...

INTRODUCTION Human parvovirus B19 (PB19) is a single-stranded DNA virus that was first discovered in 1975 by Yvonne Cossart and her colleagues. It has been associated with a variety of clinical manifestations, including rash, thrombocytopenia, leukopenia, fetal wastage, hypocomplementemia, autoimmune hemolytic anemia, arthritis and vasculitis. It is the causative agent of erythema infectiosum (...

INTRODUCTION Human parvovirus B19 is a DNA virus most known for causing erythema infectiosum in children, and polyarthropathy or transient aplastic crisis in adults. However, various unusual clinical manifestations have also been reported in association with it. We describe a young patient who presented with splenic infarcts as a rare complication of B19 infection. CASE REPORT A 33-year old p...

Human parvovirus B19 (PV-B19) causes erythema infectiosum, hydrops fetalis, and transient aplastic crisis in immunocompromised patients with chronic hemolytic anemia, arthralgia, and chronic pure red cell aplasia [1]. It may also cause autoimmune hemolytic anemia [2] (which presents as aplastic crisis with reticulocytopenia or increased erythropoiesis with reticulocytosis) [3], autoimmune throm...