Journal of General Virology, Vol 79, 1105-1113, Copyright © 1998 by Society for General Microbiology

ARTICLES

Characterization and phylogenetic analysis of a novel hepatitis D virus strain discovered by restriction fragment length polymorphism analysis

JC Wu, TY Chiang and IJ Sheen
Department of Medicine, Veterans General Hospital, National Yang-Ming University School of Medicine, Taipei, Taiwan, Republic of China. jcwu@vghtpe.gov.tw

The hepatitis D virus (HDV) genotypes in 46 HDV-infected patients and 12 prostitutes were screened with Xhol restriction fragment length polymorphism (RFLP) analysis of reverse transcription PCR products of viral genomes and verified by phylogenetic analysis. The amplificates of three (6.5%) patients and two (17%) prostitutes showed a novel RFLP pattern different from those of the three known genotypes. Complete HDV genomic sequence identities between isolates with a novel RFLP and the HDV genotypes I, II and III were 72.3, 77.2 and 63.0%, respectively. Importantly, divergence was mostly seen in various regions related to replication or packaging. The novel isolates formed a monophyletic group (P < 0.05) and were most closely related to genotype II.

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