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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 7, 2002, pp. 965-970
Bioline Code: oc02219
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 7, 2002, pp. 965-970

 en Clinical and Epidemiological Aspects of Human Parvovirus B19 Infection in an Urban Area in Brazil (Niterói City Area, State of Rio de Janeiro, Brazil)
Solange Artimos de Oliveira; Luiz Antonio Bastos Camacho; Antonio Carlos de Medeiros Pereira; Tereza Filomena Faillace; Sérgio Setúbal & Jussara Pereira do Nascimento

Abstract

This study was designed to analyse the clinical and epidemiological data from human parvovirus B19 cases in a six-year study of rash diseases conduct in an urban area in Brazil (Niterói city area, State of Rio de Janeiro). A total of 673 patients with acute rash diseases were seen at two primary health care units and at a general hospital. A clotted blood sample was collected from all subjects at the time of consultation. Forty-nine per cent (330 cases) of the patients were negative for dengue, rubella and measles IgM or for low avidity IgG to HHV-6. Of these 330, 105 (31.8%) were identified as IgM positive to parvovirus B19 by using an antibody capture EIA. During the study period, three distinct peaks of parvovirus infection were detected, suggesting that the disease appears to cycle in approximately 4-5 years. B19 infection was characterized by variable combinations of fever, flu-like symptoms, arthropathy, and gastrointestinal symptoms. Frequency of fever and arthropathy was substantially higher in adults, 75% [χ2 (1 D.F.) = 11.39, p = 0.0007] and 62.5% [χ2 (1 D.F.) = 29.89, p = 0.0000], respectively. "Slapped-cheek" appearance and reticular or lace-like rash were seen in only 30.1% of the children. No adult presented this typical rash. The lack of the typical rash pattern in a large proportion of parvovirus B19 and the similarity of clinical manifestations to other rash diseases, specially to rubella, highlight the difficulty of diagnosing B19 infection on clinical grounds alone.

Keywords
human parvovirus B19 - diagnosis - IgM - epidemiology - clinical features - Niterói, Rio de Janeiro - Brazil

 
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