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Concomitant rotavirus serotypes 1 and 4 infections in a diarrhoeic child from Belém, Brazil

Infecção concomitante por sorotipos 1 e 4 de rotavírus em uma criança diarréica de Belém, Brasil

Abstracts

Concomitant serotypes 1 and 4 infections were detected in a 15-month old female child with community-acquired diarrhoea which lasted 7 days and coursed with moderate dehydration. The evidence for dual rotavirus infection was offered by the following findings: a) enzyme-linked immunosorbent assay (ELISA) positive reactions to both 1 and 4 serotypes; and b) extra-migrating bands at electro-phoresis of RNA in polyacrylamide gel (PAGE). These results suggest that children living under poor sanitation conditions are heavily exposed to rotavirus infections; in addition, the co-circulation of different serotypes in the same setting sustains the current concept that a rotavirus vaccine should be rnultivalent, in order to protect children against the four epidemiologically important rotavirus G serotypes.

Concomitant; rotavirus; Serotypes 1 and 4; Infections


Infecções simultâneas por sorotipos 1 e 4 de rotavírus foram observadas em uma criança de 15 meses de idade, do sexo feminino, internada com dirréia aguda contraída na comunidade que perdurou por 7 dias, evoluindo com desidratação moderada. As evidências dessas infecções foram inferidas baseadas em testes tais como: a) ensaio imunoenzimático (ELISA), evidenciando-se reação positiva para os sorotipos 1 e 4; e b) migrações extras de segmentos de ARN visualizados à eletroforese em gel de poliacrilamida (EGPA). Esses resultados sugerem que as condições precárias de higiene e saneamento em que vivia essa criança propiciam a infecção maciça por esses agentes virais. Além disso, a co-circulação de diferentes sorotipos no mesmo ambiente sustenta a necessidade de utilizar-se, no futuro, uma vacina polivalente, que proteja as crianças contra os quatro sorotipos G, epidemiologicamente importantes.


VIROLOGY

Concomitant rotavirus serotypes 1 and 4 infections in a diarrhoeic child from Belém, Brazil

Infecção concomitante por sorotipos 1 e 4 de rotavírus em uma criança diarréica de Belém, Brasil

J.D.P. Mascarenhas; R.H.P. Gusmão; Y.B. Gabbay; T.A.F. Monteiro; J.B. Gomes; A.C. Linhares

Serviço de Virologia Geral do Instituto Evandro Chagas. Av. Almirante Barroso, 492. 66.090-000 Belém, Pará, Brasil

Correspondence to Correspondence to: Dr. Joana D.P. Mascarenhas Instituto Evandro Chagas Avenida Almirante Barroso 492 66090-000 Belém, Pará, Brasil

SUMMARY

Concomitant serotypes 1 and 4 infections were detected in a 15-month old female child with community-acquired diarrhoea which lasted 7 days and coursed with moderate dehydration. The evidence for dual rotavirus infection was offered by the following findings: a) enzyme-linked immunosorbent assay (ELISA) positive reactions to both 1 and 4 serotypes; and b) extra-migrating bands at electro-phoresis of RNA in polyacrylamide gel (PAGE). These results suggest that children living under poor sanitation conditions are heavily exposed to rotavirus infections; in addition, the co-circulation of different serotypes in the same setting sustains the current concept that a rotavirus vaccine should be rnultivalent, in order to protect children against the four epidemiologically important rotavirus G serotypes.

Keywords: Concomitant; rotavirus; Serotypes 1 and 4; Infections.

RESUMO

Infecções simultâneas por sorotipos 1 e 4 de rotavírus foram observadas em uma criança de 15 meses de idade, do sexo feminino, internada com dirréia aguda contraída na comunidade que perdurou por 7 dias, evoluindo com desidratação moderada. As evidências dessas infecções foram inferidas baseadas em testes tais como: a) ensaio imunoenzimático (ELISA), evidenciando-se reação positiva para os sorotipos 1 e 4; e b) migrações extras de segmentos de ARN visualizados à eletroforese em gel de poliacrilamida (EGPA). Esses resultados sugerem que as condições precárias de higiene e saneamento em que vivia essa criança propiciam a infecção maciça por esses agentes virais. Além disso, a co-circulação de diferentes sorotipos no mesmo ambiente sustenta a necessidade de utilizar-se, no futuro, uma vacina polivalente, que proteja as crianças contra os quatro sorotipos G, epidemiologicamente importantes.

Full text available only in PDF format.

Texto completo disponível apenas em PDF.

ACKNOWLEDGEMENTS

The authors thank Drs. Zéa L. Lainson, Francisco Lúzio P. Ramos and Sebastião S. Valente for assistence in the bacteriological and parasitological studies.

Recebido para publicação em 01/04/1996

Aceito para publicação em 16/07/1996

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  • Correspondence to:

    Dr. Joana D.P. Mascarenhas
    Instituto Evandro Chagas
    Avenida Almirante Barroso 492
    66090-000 Belém, Pará, Brasil
  • Publication Dates

    • Publication in this collection
      22 Sept 2006
    • Date of issue
      Aug 1996

    History

    • Received
      01 Apr 1996
    • Accepted
      16 July 1996
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