TY - JOUR
T1 - Relative frequency of human rotavirus VP4 (P) genotypes recovered over a ten‐year period from South African children with diarrhea
AU - Mphahlele, M. J.
AU - Steele, A. D.
PY - 1995/9
Y1 - 1995/9
N2 - The relative frequency and distribution of the VP4 (P) genotypes of 227 human rotavirus field strains were investigated in South Africa. The stool samples were collected between 1984‐1993 from infants and young children with diarrhea at Ga‐Rankuwa Hospital, Pretoria, South Africa. The RNA was extracted from stools, heat denatured, and dot blotted onto nylon membranes. The blots were hybridized to PCR‐gener‐ated, 32P radio‐labelled VP4‐specific probes (corresponding to the hyperdivergent region of the VP4 gene) of the following human rotavirus VP4 genotypes: P4, P6, P8, P9, P10, and P12. Of the 157 rotavirus strains typed by the probes, the P8 genotype was identified most frequently in 63.7% (n=100) of the samples. The P4 and P6 genotypes were detected less frequently in 22.3% (n=35) and 8.3% (n=13) of the samples, respectively. Five cases of dual infection between P8 and P4 genotypes occurred, indicating the potential for reassortment between members of different rotavirus genogroups. The P9 genotype could not be confirmed in 3 cases (1.9%), while the PI0 genotype was not observed at all, indicating the scarcity or absence of these VP4 genotypes in this region. Interestingly, we identified the newly‐described PI2 VP4 genotype in 6 cases (3.8%), suggesting a wide geographical distribution. Furthermore, several samples with sufficient RNA by gel electrophoresis remained untyped by the probes used in this study, and may represent putative “new” human VP4 genotype(S). © 1995 Wiley‐Liss, Inc.
AB - The relative frequency and distribution of the VP4 (P) genotypes of 227 human rotavirus field strains were investigated in South Africa. The stool samples were collected between 1984‐1993 from infants and young children with diarrhea at Ga‐Rankuwa Hospital, Pretoria, South Africa. The RNA was extracted from stools, heat denatured, and dot blotted onto nylon membranes. The blots were hybridized to PCR‐gener‐ated, 32P radio‐labelled VP4‐specific probes (corresponding to the hyperdivergent region of the VP4 gene) of the following human rotavirus VP4 genotypes: P4, P6, P8, P9, P10, and P12. Of the 157 rotavirus strains typed by the probes, the P8 genotype was identified most frequently in 63.7% (n=100) of the samples. The P4 and P6 genotypes were detected less frequently in 22.3% (n=35) and 8.3% (n=13) of the samples, respectively. Five cases of dual infection between P8 and P4 genotypes occurred, indicating the potential for reassortment between members of different rotavirus genogroups. The P9 genotype could not be confirmed in 3 cases (1.9%), while the PI0 genotype was not observed at all, indicating the scarcity or absence of these VP4 genotypes in this region. Interestingly, we identified the newly‐described PI2 VP4 genotype in 6 cases (3.8%), suggesting a wide geographical distribution. Furthermore, several samples with sufficient RNA by gel electrophoresis remained untyped by the probes used in this study, and may represent putative “new” human VP4 genotype(S). © 1995 Wiley‐Liss, Inc.
KW - VP4 gene
KW - VP4 genotype
KW - human rotavirus
KW - hybridization
KW - probe
UR - http://www.scopus.com/inward/record.url?scp=0029029854&partnerID=8YFLogxK
U2 - 10.1002/jmv.1890470102
DO - 10.1002/jmv.1890470102
M3 - Article
C2 - 8551250
AN - SCOPUS:0029029854
SN - 0146-6615
VL - 47
SP - 1
EP - 5
JO - Journal of Medical Virology
JF - Journal of Medical Virology
IS - 1
ER -