title: Hepatitis C: sexual or intrafamilial transmission? Epidemiological and phylogenetic analysis of hepatitis C virus in 24 infected couples.
abstract: The role of sexual or intrafamilial transmission of hepatitis C is controversial. A phylogenetic analysis was performed on the non-structural region 5B of the hepatitis C virus (NS5B-HCV). High percentages of homology (mean of 98.3%) were shown between the couples. Twenty (83.3%) of the 24 men but only two of the women (8.3%) reported having had sexually transmitted diseases during their lives. The risk factors for HCV acquisition were blood transfusion (10 couples), use of illegal injected drugs (17), use of inhalants (15), acupuncture (5) and tattoos (5). The shared use of personal hygiene items included toothbrushes between six couples (25%), razor blades between 16 (66.7%), nail clippers between 21 (87.5%) and manicure pliers between 14 (58.3%). The high degree of similarity of the hepatitis C virus genome supports the hypothesis of hepatitis C virus transmission between these couples. The shared use of personal hygiene items suggests the possibility of intrafamilial transmission of infection.
authors.affiliation: Hepatitis Laboratory, Infectious Diseases Departament, Medical School/USP, University of São Paulo, Rua Paraguassu 174/141, São Paulo, SP, Brazil. norma@usp.br
authors.forename: Norma de Paula
authors.initials: Nde P
authors.lastname: Cavalheiro
authors.forename: Abel
authors.initials: A
authors.lastname: De La Rosa
authors.forename: Slava
authors.initials: S
authors.lastname: Elagin
authors.forename: Fátima Mitiko
authors.initials: FM
authors.lastname: Tengan
authors.forename: Evaldo Stanislau Affonso de
authors.initials: ES
authors.lastname: Araújo
authors.forename: Antonio Alci
authors.initials: AA
authors.lastname: Barone
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005838:Genotype; D016174:Hepacivirus / Q000235:genetics*; D006526:Hepatitis C / Q000635:transmission* / Q000821:virology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010802:Phylogeny; D012307:Risk Factors; D018454:Spouses; D017361:Viral Nonstructural Proteins / Q000235:genetics*; D012324:RNA-Dependent RNA Polymerase
chemical_list: D017361:Viral Nonstructural Proteins; C087036:NS-5 protein, hepatitis C virus; D012324:RNA-Dependent RNA Polymerase