Rotavirus in diarrheal children in rural Burkina Faso: High prevalence of genotype G6P
2012 (English)In: Infection, Genetics and Evolution, ISSN 1567-1348, E-ISSN 1567-7257, Vol. 12, no 8, 1892-1898 p.Article in journal (Refereed) Published
Group A rotavirus (RVA) is the most common cause of severe gastroenteritis in young children globally, and responsible for a significant number of deaths in African countries. While vaccines are available, trials have shown a lesser efficacy in Africa. One of the reasons could be the prevalence and/or emergence of unusual or novel RVA strains, as many strains detected in African countries remain uncharacterized. less thanbrgreater than less thanbrgreater thanIn this study, we characterized RVA positive specimens from two remote rural areas in Burkina Faso, West Africa. In total 56 RVA positive specimens were subgrouped by their VP6 gene, and G-and P typed by PCR and/or sequencing of the VP7 and VP4 genes, respectively. less thanbrgreater than less thanbrgreater thanNotably, we found a high prevalence of the unusual G6PSGI strains (23%). It was the second most common constellation after G9PSGII (32%); and followed by G1PSGII (20%) and G2PSGI (9%). We also detected a G8PSGI strain, for the first time in Burkina Faso. The intra-genetic diversity was high for the VP4 gene with two subclusters within the P genotype and three subclusters within the P genotype which were each associated with a specific G-type, thereby suggesting a genetic linkage. The G6PSGI and other SGI RVA strains infected younger children as compared to SGII strains (p andlt; 0.05). less thanbrgreater than less thanbrgreater thanTo conclude, in this study we observed the emergence of unusual RVA strains and high genetic diversity of RVA in remote rural areas of Burkina Faso. The results highlight the complexity of RVA epidemiology which may have implication for the introduction of rotavirus vaccines currently being evaluated in many African countries.
Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 12, no 8, 1892-1898 p.
Rotavirus, Genotypes, G6P, Rural areas, Gastroenteritis, Children
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-87464DOI: 10.1016/j.meegid.2012.08.014ISI: 000312429000038OAI: oai:DiVA.org:liu-87464DiVA: diva2:589478
Funding Agencies|Swedish Research Council|10392|2013-01-182013-01-182013-09-10Bibliographically approved