Evolution of group A Rotavirus strains circulating in Tunisia over a 3-year period (2005-2007)

A. Chouikha, M. Ben Hadj Fredj, I. Fodha, I. Mathlouthi, M. Ardhaoui, N. Teleb, I. Brini, F. Messaadi, M. Mastouri, T. Sfar, M. Hachicha, T. Kammoun, A. Bouaaziz, F. Amri, A. Harbi, M. Zribi, S. Bousnina, A. Khemakhem, N. Boujaafar, A. Trabelsi*A. D. Steele

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Background: Rotaviruses are the most frequent agents associated with diarrhoea in children worldwide. Analysis of mobility of the 11 segments of genomic RNA by polyacrylamide gel electrophoresis (PAGE) yields a pattern which is characteristic for a particular rotavirus isolate. The group A rotaviruses can be further characterized by analysis of VP7 and VP4 genes specificities, responsible for rotavirus classification into G and P genotypes, respectively. The aim of the present study was to determine the evolution of group A Rotavirus strains circulating in Tunisia over a 3-year period (2005-2007). Material and methods: A total of 1503 stool samples collected from children less than five years old, consulting or hospitalised in Tunisia for diarrhoea between 2005 and 2007, were screened for the presence of group A Rotaviruses. Rotavirus-positive specimens were further analyzed by PAGE and G/P-genotyped by multiplex semi-nested RT-PCR. Results: Rotaviruses were detected in 323 stool samples over 1503 (21 %). Long electropherotypes predominated in Tunisia during the whole period of study (N= 158 vs N= 82 short electropherotypes). VP7 genotyping showed the cocirculation of five different genotypes: G1, G2, G3, G4 and G9. VP4 typing detected four different P-genotypes: P[8], P[4], P[6] and P[11]. Rotavirus strains with G3P[8] specificity were predominating in Tunisia in 2005 and 2006, replaced by G2P[4] strains in 2007.

Translated title of the contributionEvolution of group A Rotavirus strains circulating in Tunisia over a 3-year period (2005-2007)
Original languageFrench
Pages (from-to)e79-e83
JournalPathologie Biologie
Volume59
Issue number4
DOIs
Publication statusPublished - Aug 2011
Externally publishedYes

Keywords

  • Gastroentérite
  • Génotypage
  • Rotavirus
  • VP4
  • VP7
  • Électrophorétype

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