Abstract
Between July 2009 and June 2014, a total of 1,546 fecal specimens were collected from children <5 years of age with acute gastroenteritis admitted to Kiambu County Hospital, Central Kenya. The specimens were screened for group A rotavirus (RVA) using ELISA, and RVA-positive specimens were subjected to semi-nested RT-PCR to determine the G and P genotypes. RVA was detected in 429/1,546 (27.5%) fecal specimens. RVA infections occurred in all age groups <59 months, with an early peak at 6–17 months. The infections persisted year-round with distinct seasonal peaks depending on the year. G1P[8] (28%) was the most predominant genotype, followed by G9P[8] (12%), G8P[4] (7%), G1P[4] (5%), G9P[4] (4%), and G12P[6] (3%). In the yearly change of G and P genotypes, a major shift from G9P[8] to G1P[8] was found in 2012. Phylogenetic analysis of the nucleotide sequences of the VP7 and VP4 genes of seven strains with unusual G8 or P[6] showed that the VP7 nucleotide sequences of G8 were clustered in lineage 6 in which African strains are included, and that there are at least two distinct VP4 nucleotide sequences of P[6] strains. These results represent basic data on RVA strains circulating in this region before vaccine introduction. J. Med. Virol. 89:809–817, 2017.
| Original language | English |
|---|---|
| Pages (from-to) | 809-817 |
| Number of pages | 9 |
| Journal | Journal of Medical Virology |
| Volume | 89 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 01-05-2017 |
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All Science Journal Classification (ASJC) codes
- Virology
- Infectious Diseases
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Molecular epidemiology of rotavirus gastroenteritis in Central Kenya before vaccine introduction, 2009–2014. / Wandera, Ernest A.; Mohammad, Shah; Komoto, Satoshi; Maeno, Yoshimasa; Nyangao, James; Ide, Tomihiko; Kathiiko, Cyrus; Odoyo, Erick; Tsuji, Takao; Taniguchi, Koki; Ichinose, Yoshio.
In: Journal of Medical Virology, Vol. 89, No. 5, 01.05.2017, p. 809-817.Research output: Contribution to journal › Article
TY - JOUR
T1 - Molecular epidemiology of rotavirus gastroenteritis in Central Kenya before vaccine introduction, 2009–2014
AU - Wandera, Ernest A.
AU - Mohammad, Shah
AU - Komoto, Satoshi
AU - Maeno, Yoshimasa
AU - Nyangao, James
AU - Ide, Tomihiko
AU - Kathiiko, Cyrus
AU - Odoyo, Erick
AU - Tsuji, Takao
AU - Taniguchi, Koki
AU - Ichinose, Yoshio
PY - 2017/5/1
Y1 - 2017/5/1
N2 - Between July 2009 and June 2014, a total of 1,546 fecal specimens were collected from children <5 years of age with acute gastroenteritis admitted to Kiambu County Hospital, Central Kenya. The specimens were screened for group A rotavirus (RVA) using ELISA, and RVA-positive specimens were subjected to semi-nested RT-PCR to determine the G and P genotypes. RVA was detected in 429/1,546 (27.5%) fecal specimens. RVA infections occurred in all age groups <59 months, with an early peak at 6–17 months. The infections persisted year-round with distinct seasonal peaks depending on the year. G1P[8] (28%) was the most predominant genotype, followed by G9P[8] (12%), G8P[4] (7%), G1P[4] (5%), G9P[4] (4%), and G12P[6] (3%). In the yearly change of G and P genotypes, a major shift from G9P[8] to G1P[8] was found in 2012. Phylogenetic analysis of the nucleotide sequences of the VP7 and VP4 genes of seven strains with unusual G8 or P[6] showed that the VP7 nucleotide sequences of G8 were clustered in lineage 6 in which African strains are included, and that there are at least two distinct VP4 nucleotide sequences of P[6] strains. These results represent basic data on RVA strains circulating in this region before vaccine introduction. J. Med. Virol. 89:809–817, 2017.
AB - Between July 2009 and June 2014, a total of 1,546 fecal specimens were collected from children <5 years of age with acute gastroenteritis admitted to Kiambu County Hospital, Central Kenya. The specimens were screened for group A rotavirus (RVA) using ELISA, and RVA-positive specimens were subjected to semi-nested RT-PCR to determine the G and P genotypes. RVA was detected in 429/1,546 (27.5%) fecal specimens. RVA infections occurred in all age groups <59 months, with an early peak at 6–17 months. The infections persisted year-round with distinct seasonal peaks depending on the year. G1P[8] (28%) was the most predominant genotype, followed by G9P[8] (12%), G8P[4] (7%), G1P[4] (5%), G9P[4] (4%), and G12P[6] (3%). In the yearly change of G and P genotypes, a major shift from G9P[8] to G1P[8] was found in 2012. Phylogenetic analysis of the nucleotide sequences of the VP7 and VP4 genes of seven strains with unusual G8 or P[6] showed that the VP7 nucleotide sequences of G8 were clustered in lineage 6 in which African strains are included, and that there are at least two distinct VP4 nucleotide sequences of P[6] strains. These results represent basic data on RVA strains circulating in this region before vaccine introduction. J. Med. Virol. 89:809–817, 2017.
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U2 - 10.1002/jmv.24691
DO - 10.1002/jmv.24691
M3 - Article
VL - 89
SP - 809
EP - 817
JO - Journal of Medical Virology
JF - Journal of Medical Virology
SN - 0146-6615
IS - 5
ER -