Title: Rotavirus surveillance in kisangani, the democratic republic of the congo, reveals a high number of unusual genotypes and gene segments of animal origin in non-vaccinated symptomatic children
Authors: Heylen, Elisabeth
Batoko Likele, Bibi
Zeller, Mark
Stevens, Stijn
De Coster, Sarah
Conceição-Neto, Nádia
Van Geet, Chris
Jacobs, Jan
Ngbonda, Dauly
Van Ranst, Marc
Matthijnssens, Jelle # ×
Issue Date: 2014
Publisher: Public Library of Sciene
Series Title: PLoS One vol:9 issue:6
Article number: e100953
Abstract: Group A rotavirus (RVA) infections form a major public health problem, especially in low-income countries like the Democratic Republic of the Congo (COD). However, limited data on RVA diversity is available from sub-Saharan Africa in general and the COD in particular. Therefore, the first aim of this study was to determine the genetic diversity of 99 RVAs detected during 2007-2010 in Kisangani, COD. The predominant G-type was G1 (39%) and the most predominant P-type was P[6] (53%). A total of eight different G/P-combinations were found: G1P[8] (28%), G8P[6] (26%), G2P[4] (14%), G12P[6] (13%), G1P[6] (11%), G9P[8] (4%), G4P[6] (2%) and G8P[4] (1%). The second aim of this study was to gain insight into the diversity of P[6] RVA strains in the COD. Therefore, we selected five P[6] RVA strains in combination with the G1, G4, G8 (2x) or G12 genotype for complete genome analysis. Complete genome analysis showed that the genetic background of the G1P[6] and G12P[6] strains was entirely composed of genotype 1 (Wa-like), while the segments of the two G8P[6] strains were identified as genotype 2 (DS-1-like). Interestingly, all four strains possessed a NSP4 gene of animal origin. The analyzed G4P[6] RVA strain was found to possess the unusual G4-P[6]-I1-R1-C1-M1-A1-N1-T7-E1-H1 constellation. Although the majority of its genes (if not all), were presumably of porcine origin, this strain was able to cause gastro-enteritis in humans. The high prevalence of unusual RVA strains in the COD highlights the need for continued surveillance of RVA diversity in the COD. These results also underline the importance of complete genetic characterization of RVA strains and indicate that reassortments and interspecies transmission among human and animal RVAs strains occur regularly. Based on these data, RVA vaccines will be challenged with a wide variety of different RVA strain types in the COD.
ISSN: 1932-6203
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular and Vascular Biology
Laboratory of Clinical and Epidemiological Virology (Rega Institute)
Departement Gezondheidszorg - UC Limburg
Department of Health and Technology - UC Leuven
Laboratory of Virology and Chemotherapy (Rega Institute)
× corresponding author
# (joint) last author

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