TY - JOUR
T1 - Phylogenetic Reconstruction of HCV Genotype 1b Dissemination in a Small City Centre: TheCamporeale Model
AU - Craxi, Antonio
AU - Di Stefano, Rosa
AU - Ferraro, Donatella
AU - Rapicetta, Maria
AU - Argentini, Claudio
AU - Stroffolini, Tommaso
AU - Genovese, Domenico
AU - Pizzillo, Paola
PY - 2008
Y1 - 2008
N2 - Several seroepidemiological population-basedsurveys carried out in Italy have shown a high prevalence of hepatitis C virus (HCV) infection.Camporeale (CP), a small Sicilian town with a 10.4% prevalence of HCV mostly genotype 1b,probably represents a specific context, since intravenous drug addiction, and sexual promiscuity are almost absent. In order to reconstruct the pattern of introduction and diffusion of HCV in this ecological niche, the NS5 genomic region of72 HCV genotype 1 isolates (39 from CP and 33collected throughout Sicily) was amplified and sequenced. Sequences were aligned and analyzed by BioEdit, PAUP and BEAST, and their molecular evolution compared. Thirty-eight HCV genotype 1b isolates from CP were associated in a monophyletic ‘‘transmission cluster.’’ By applying Monte Carlo Markov simulation, it was calculated that HCV was introduced between the end of the 1940s and the beginning of the 1950s.The phylogenetic distance between the CP cluster and other Sicilian isolates confirmed its uniqueness and the local diffusion from a common ancestor. The data obtained from classic phylogenetic analysis, combined with the application of the Bayesian analysis to the study of thecoalescence of phylogenetic trees, have shownthat, in CP, few HCV native strains have beentransmitted in a limited length of time probably through iatrogenic routes, and then have not spread further
AB - Several seroepidemiological population-basedsurveys carried out in Italy have shown a high prevalence of hepatitis C virus (HCV) infection.Camporeale (CP), a small Sicilian town with a 10.4% prevalence of HCV mostly genotype 1b,probably represents a specific context, since intravenous drug addiction, and sexual promiscuity are almost absent. In order to reconstruct the pattern of introduction and diffusion of HCV in this ecological niche, the NS5 genomic region of72 HCV genotype 1 isolates (39 from CP and 33collected throughout Sicily) was amplified and sequenced. Sequences were aligned and analyzed by BioEdit, PAUP and BEAST, and their molecular evolution compared. Thirty-eight HCV genotype 1b isolates from CP were associated in a monophyletic ‘‘transmission cluster.’’ By applying Monte Carlo Markov simulation, it was calculated that HCV was introduced between the end of the 1940s and the beginning of the 1950s.The phylogenetic distance between the CP cluster and other Sicilian isolates confirmed its uniqueness and the local diffusion from a common ancestor. The data obtained from classic phylogenetic analysis, combined with the application of the Bayesian analysis to the study of thecoalescence of phylogenetic trees, have shownthat, in CP, few HCV native strains have beentransmitted in a limited length of time probably through iatrogenic routes, and then have not spread further
KW - coalescent inference analysis
KW - community
KW - hepatitis C virus
KW - iatrogenic
routes
KW - molecular epidemiology
KW - coalescent inference analysis
KW - community
KW - hepatitis C virus
KW - iatrogenic
routes
KW - molecular epidemiology
UR - http://hdl.handle.net/10447/44309
M3 - Article
VL - 80
SP - 1723
EP - 1731
JO - Journal of Medical Virology
JF - Journal of Medical Virology
SN - 0146-6615
ER -