HEPATITIS E VIRUS CIRCULATION IN ITALY: PHYLOGENETIC AND EVOLUTIONARY ANALYSIS

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MONTESANO CARLA; GIOVANETTI MARTA; CIOTTI MARCO; CELLA ELEONORA; LO PRESTI ALESSANDRA; GRIFONI ALBA; ZEHENDER GIANGUGLIELMO; ANGELETTI SILVIA; CICCOZZI MASSIMO

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Journal: Hepatitis Monthly Year:2016 | Volume:16 | Issue:3 Page(s): 0-0

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Title

HEPATITIS E VIRUS CIRCULATION IN ITALY: PHYLOGENETIC AND EVOLUTIONARY ANALYSIS

Author(s)

Keywords

HEPATITIS E VIRUS

PHYLOGENY

EVOLUTION

Abstract

Background: HEPATITIS E VIRUS (HEV), a major cause of acute viral hepatitis in developing countries, has been classified into four main genotypes and a number of subtypes. New genotypes have been recently identified in various mammals, including HEV genotype 3, which has a worldwide distribution. It is widespread among pigs in developed countries.Objectives: This study investigated the genetic diversity of HEV among humans and swine in Italy. The date of origin and the demographic history of the HEV were also estimated.Materials and Methods: A total of 327 HEV sequences of swine and humans from Italy were downloaded from the national centre for biotechnology information. Three different data sets were constructed. The first and the second data set were used to confirm the genotype of the sequences analyzed. The third data set was used to estimate the mean EVOLUTIONary rate and to determine the time-scaled PHYLOGENY and demographic history.Results: The Bayesian maximumclade credibility tree and the time of the mostcommonrecent ancestor estimates showed that the root of the tree dated back to the year 1907 (95% HPD: 1811 - 1975). Twomain clades were found, divided into two subclades. Skyline plot analysis, performed separately for human and swine sequences, demonstrated the presence of a bottleneck only in the skyline plot from the swine sequences. Selective pressure analysis revealed only negatively selected sites.Conclusions: This study provides support for the hypothesis that humans are probably infected after contact with swine sources.The findings emphasize the importance of checking the country of origin of swine and of improving sanitary control measures from the veterinary standpoint to prevent the spread of HEV infection in Italy.

Cites

EPIDEMIOLOGY OF HEPATITIS A VIRUS INFECTIONS IN SYRIA, 2017; WAR ANDASYLUM SEEKERS: A GLOBAL THREAT

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APA: Copy

MONTESANO, CARLA, GIOVANETTI, MARTA, CIOTTI, MARCO, CELLA, ELEONORA, LO PRESTI, ALESSANDRA, GRIFONI, ALBA, ZEHENDER, GIANGUGLIELMO, ANGELETTI, SILVIA, & CICCOZZI, MASSIMO. (2016). HEPATITIS E VIRUS CIRCULATION IN ITALY: PHYLOGENETIC AND EVOLUTIONARY ANALYSIS. HEPATITIS MONTHLY, 16(3), 0-0. SID. https://sid.ir/paper/306982/en

Vancouver: Copy

MONTESANO CARLA, GIOVANETTI MARTA, CIOTTI MARCO, CELLA ELEONORA, LO PRESTI ALESSANDRA, GRIFONI ALBA, ZEHENDER GIANGUGLIELMO, ANGELETTI SILVIA, CICCOZZI MASSIMO. HEPATITIS E VIRUS CIRCULATION IN ITALY: PHYLOGENETIC AND EVOLUTIONARY ANALYSIS. HEPATITIS MONTHLY[Internet]. 2016;16(3):0-0. Available from: https://sid.ir/paper/306982/en

IEEE: Copy

CARLA MONTESANO, MARTA GIOVANETTI, MARCO CIOTTI, ELEONORA CELLA, ALESSANDRA LO PRESTI, ALBA GRIFONI, GIANGUGLIELMO ZEHENDER, SILVIA ANGELETTI, and MASSIMO CICCOZZI, “HEPATITIS E VIRUS CIRCULATION IN ITALY: PHYLOGENETIC AND EVOLUTIONARY ANALYSIS,” HEPATITIS MONTHLY, vol. 16, no. 3, pp. 0–0, 2016, [Online]. Available: https://sid.ir/paper/306982/en

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