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Journal of Clinical Microbiology, Feb 1996, 436-439, Vol 34, No. 2
M Ramachandran, BK Das, A Vij, R Kumar, SS Bhambal, N Kesari, H Rawat, L Bahl, S Thakur, PA Woods, RI Glass, MK Bhan and JR Gentsch
Between April and December 1993, we determined P and G genotypes of group A
rotavirus strains obtained from children admitted to diarrhea treatment
centers in five Indian cities. From a total of 63 rotavirus- positive
specimens, we identified 10 different strains with five different G
genotypes and four distinct P types by using reverse transcription-PCR. The
common worldwide strains G1P8, G2P4, G3P8, and G4P8 were underrepresented
among Indian children (33%), whereas strains of P type 6 (G1P6, G2P6, G3P6,
G4P6, and G9P6), which primarily infect asymptomatic newborns but are rare
in children with diarrhea were common in India (43%). Of these, G9P6, a
strain not previously reported to be found in children with diarrhea, was
the most prevalent (22%). Eleven percent of the strains were nontypeable,
and another 11% of the specimens had mixed infections. Using
digoxigenin-labeled, genotype- specific hybridization probes, we confirmed
all G9 strains and mixed infections tested and identified three nontypeable
strains (one G9 and two P8). The epidemiological significance of G9
rotavirus strains, if confirmed in other settings, may have important
implications for vaccine development.
Copyright © 1996 by the American Society for Microbiology. All rights reserved.
Unusual diversity of human rotavirus G and P genotypes in India
Department of Pediatrics, All India Institute of Medical Sciences, New Delhi.
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