scholarly journals Whole genome analysis of local Kenyan and global sequences unravels the epidemiological and molecular evolutionary dynamics of RSV genotype ON1 strains

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
J R Otieno ◽  
E M Kamau ◽  
J W Oketch ◽  
J M Ngoi ◽  
A M Gichuki ◽  
...  
2011 ◽  
Vol 92 (9) ◽  
pp. 2201-2208 ◽  
Author(s):  
Souvik Ghosh ◽  
Noriaki Adachi ◽  
Zipporah Gatheru ◽  
James Nyangao ◽  
Dai Yamamoto ◽  
...  

Although G2P[4] rotaviruses are common causes of acute childhood diarrhoea in Africa, to date there are no reports on whole genomic analysis of African G2P[4] strains. In this study, the nearly complete genome sequences of two Kenyan G2P[4] strains, AK26 and D205, detected in 1982 and 1989, respectively, were analysed. Strain D205 exhibited a DS-1-like genotype constellation, whilst strain AK26 appeared to be an intergenogroup reassortant with a Wa-like NSP2 genotype on the DS-1-like genotype constellation. The VP2-4, VP6-7, NSP1, NSP3 and NSP5 genes of strain AK26 and the VP2, VP4, VP7 and NSP1–5 genes of strain D205 were closely related to those of the prototype or other human G2P[4] strains. In contrast, their remaining genes were distantly related, and, except for NSP2 of AK26, appeared to originate from or share a common origin with rotavirus genes of artiodactyl (ruminant and camelid) origin. These observations highlight the complex evolutionary dynamics of African G2P[4] rotaviruses.


2011 ◽  
Vol 86 (1) ◽  
pp. 11-18 ◽  
Author(s):  
G. J. Baillie ◽  
M. Galiano ◽  
P.-M. Agapow ◽  
R. Myers ◽  
R. Chiam ◽  
...  

Viruses ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 95
Author(s):  
Sebotsana Rasebotsa ◽  
Jeannine Uwimana ◽  
Milton T. Mogotsi ◽  
Kebareng Rakau ◽  
Nonkululeko B. Magagula ◽  
...  

Children in low-and middle-income countries, including Rwanda, experience a greater burden of rotavirus disease relative to developed countries. Evolutionary mechanisms leading to multiple reassortant rotavirus strains have been documented over time which influence the diversity and evolutionary dynamics of novel rotaviruses. Comprehensive rotavirus whole-genome analysis was conducted on 158 rotavirus group A (RVA) samples collected pre- and post-vaccine introduction in children less than five years in Rwanda. Of these RVA positive samples, five strains with the genotype constellations G4P[4]-I1-R2-C2-M2-A2-N2-T1-E1-H2 (n = 1), G9P[4]-I1-R2-C2-M2-A1-N1-T1-E1-H1 (n = 1), G12P[8]-I1-R2-C2-M1-A1-N2-T1-E2-H3 (n = 2) and G12P[8]-I1-R1-C1-M1-A2-N2-T2-E1-H1 (n = 1), with double and triple gene reassortant rotavirus strains were identified. Phylogenetic analysis revealed a close relationship between the Rwandan strains and cognate human RVA strains as well as the RotaTeq® vaccine strains in the VP1, VP2, NSP2, NSP4 and NSP5 gene segments. Pairwise analyses revealed multiple differences in amino acid residues of the VP7 and VP4 antigenic regions of the RotaTeq® vaccine strain and representative Rwandan study strains. Although the impact of such amino acid changes on the effectiveness of rotavirus vaccines has not been fully explored, this analysis underlines the potential of rotavirus whole-genome analysis by enhancing knowledge and understanding of intergenogroup reassortant strains circulating in Rwanda post vaccine introduction.


Author(s):  
Magdalena Wysocka ◽  
Tamar Monteiro ◽  
Carine de Pina ◽  
Deisy Gonçalves ◽  
Sandrine de Pina ◽  
...  

2007 ◽  
Vol 9 (12) ◽  
pp. 2993-3007 ◽  
Author(s):  
Lisa Y. Stein ◽  
Daniel J. Arp ◽  
Paul M. Berube ◽  
Patrick S. G. Chain ◽  
Loren Hauser ◽  
...  

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