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Evidence of transmission of hepatitis D virus to spouses from sequence analysis of the viral genome
Author(s) -
Wu JawChing,
Chen ChuanMu,
Sheen IJane,
Lee ShouDong,
Tzeng HueyMiin,
Choo KongBung
Publication year - 1995
Publication title -
hepatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.488
H-Index - 361
eISSN - 1527-3350
pISSN - 0270-9139
DOI - 10.1002/hep.1840220607
Subject(s) - virology , genome , biology , virus , sequence (biology) , sequence analysis , transmission (telecommunications) , hepatitis c virus , hepatitis a virus , whole genome sequencing , computational biology , genetics , gene , computer science , telecommunications
Abstract To study sexual transmission of hepatitis D virus (HDV), 52 spouses of 56 index patients were observed and HDV genomes from antibody to HDV (anti‐HDV)‐positive couples were sequenced. Of the spouses, 11 (21%) were serum HBsAg positive, 3 (27%) of whom were also anti‐HDV positive. The HDV sequences between spouses were found to be nearly identical (98% to 98.8%) in the region analyzed (nt 911 to nt 1260). Only one couple showed an identity >90% with the genotype I HDV strains. The HDV sequences of the remaining two couples showed >95% identity with each other and >91% homology with genotype II, but they shared only a 73.1% to 73.7% homology with those of the first couple. The regions corresponding to the autocatalytic cleavage sites, the junction between the middle and the carboxyl terminal one‐third domains, and the middle domain of the open reading frame for delta antigen on the antigenomic HDV RNA were more conserved with <19% divergence among the three couples. Interestingly, there was a 56% divergence in the region corresponding to the carboxyl end of the open reading frame for the large delta antigen on the antigenomic HDV RNA. In summary, this study provides a direct nucleotide evidence of a common source of HDV infection in each couple. Despite divergence in the viral nucleotide sequence, both genotypes I and II were found in Taiwan and were transmitted from patients with a history of prostitute contact to spouses through sexual contact. (Hepatology 1995; 22:1656‐1660).