Geographic distribution of wild poliovirus type 1 genotypes

The entire nucleotide sequences of two GB virus C/hepatitis G virus isolates of distinct genotypes from Japan.

“…The divergence of 12 % in the entire genomic sequence as a criterion for genotypic differences is smaller than that for HCV at 20 % (Tokita et al, 1996), and compares with that for both poliovirus and hepatitis A virus at 15 % (Rico- Hesse et al, 1987 ;Robertson et al, 1992) and human immunodeficiency virus type 1 at 14 % (Lowagie et al, 1993). Recently, Kao et al (1996) proposed distinct genetic groups of GBV-C by the comparison of a helicase region of 117 bp.…”

New arenavirus isolated in Brazil

“…4 250 nucleotides from the 3′ end of the S segment of Sabiá virus RNA were compared with those of five other Tacaribe complex viruses (Junin, Machupo, Guanarito, Tacaribe, and Pichinde) by limited sequence analysis. 5,6 Sabiá virus was 56% divergent from Junin, Machupo, and Guanarito viruses. The source of infection in the index case is unknown, but it seems likely that Sabiá virus exists in a rodent reservoir.…”

Infección por el virus de la hepatitis A: epidemiología y diversidad genética

“…Para estudiar la diversidad genética del VHA, se utilizó en un principio el método de clasificación gené-tica empleado por Rico-Hesse y colaboradores para explorar la distribución geográfica del poliovirus, en el que las cepas se agruparon comparando la región VP1-2A (18,23,49). En 1992 se analizaron 152 cepas de VHA recuperadas de muestras de suero, heces y tejido hepático provenientes de humanos y simios, recolectadas alrededor del mundo (18).…”