Wc. Batista et al., Phylogenetic analysis of Brazilian Flavivirus using nucleotide sequences of parts of NS5 gene and 3 ' non-coding regions, VIRUS RES, 75(1), 2001, pp. 35-42
Viruses of the genus Flavivirus, which are arboviruses, of the Flaviviridae
family, are amongst the most important agents of infectious disease in Bra
zil, causing human infections with a high morbility and mortality. In this
work, the phylogeny of 14 virus amplicon sequences that were obtained by RT
-PCR with universal primers for mosquito-borne Flavivirus were studied. The
amplicons included a region of the Flavivirus genome of 129 nucleotides at
the 3' terminus of the NS5 gene and the 145 initial nucleotides of the 3'
non-coding region (NS5-3'NCR). Based on phylogenetic trees, most Brazilian
Flaviviruses were grouped into two main branches, including a yellow-fever
branch and a second main branch divided into a dengue branch that in its tu
rn is subdivided into serotype 1, 2 and 4 branches, and another (Japanese E
ncephalitis Virus Complex) blanch including SLE and Ilheus. Rocio and Cacip
acore viruses were included in the Japanese Encephalitis Virus Complex bran
ch in one of the two phylogenetic trees. Iguape virus appears in phylogenet
ic trees as a separate distant branch. (C) 2001 Elsevier Science B.V. All r
ights reserved.