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Journal of Clinical Microbiology, November 1998, p. 3362-3365, Vol. 36, No. 11
Cátedra de Virología,
Received 6 April 1998/Returned for modification 22 June
1998/Accepted 19 August 1998
Differences in pathogenesis and the probability of becoming a
chronic carrier depend on the age at which hepatitis B virus (HBV)
infection is acquired, ranging from 82% in infants less than 6 months
of age to 15 to 30% in older children. HBV genotypes from 22 pediatric
patients from two areas that differ in prevalence have been determined.
Phylogenetic analysis shows a clear difference between the genotype
distribution in Buenos Aires, a low-prevalence area, and that found in
Gualeguay, Entre Ríos, a high-prevalence area. While the
analysis allocated the sequences in the Buenos Aires group to genotypes
A (36%), D (9%), and F (55%), the Gualeguay group presented
exclusively genotype A isolates with very low nucleotide divergence,
which suggests a strong founder viral population. The high prevalence
of genotype F in the Buenos Aires group and its high intragroup
heterogeneity agree with the American origin of this genotype.
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Distribution of Hepatitis B Virus Genotypes in
Two Different Pediatric Populations from Argentina
*
Corresponding author. Mailing address: Cátedra de
Virología, Facultad de Farmacia y Bioquímica,
Universidad de Buenos Aires, Junin 956, 4 piso (1113), Buenos Aires,
Argentina. Phone: 54-1-9648264. Fax: 54-1-5083645. E-mail:
rcampos{at}ffyb.uba.ar.
Journal of Clinical Microbiology, November 1998, p. 3362-3365, Vol. 36, No. 11
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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