alexa Viral and antibody HEV prevalence in swine at slaughterhouse in Italy.
Microbiology

Microbiology

Journal of Antivirals & Antiretrovirals

Author(s): Di Bartolo, Ponterio E, Castellini L, Ostanello F, Ruggeri FM

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Abstract Hepatitis E is an acute disease of humans caused by a small RNA virus, Hepatitis E virus (HEV). In recent years, an increasing number of autochthonous human infections have been reported in industrialized countries. Genotype 3 is the main HEV type circulating in swine, and is also reported in sporadic cases of hepatitis E in humans worldwide. To date one serotype has been described. We have conducted a survey to detect antibodies against HEV in 48 swine at a slaughterhouse in Northern Italy, using ELISA test. Mean seroprevalence in the studied animal group was 87.0\%. Bile, liver and feces from the 48 animals were also collected, and HEV RNA was detected by nested reverse transcription-polymerase chain reaction, amplifying a fragment of the ORF2. HEV genome was most frequently detected in bile samples (51.1\%), followed by feces (33.3\%) and liver (20.8\%). Thirty-one out of 48 studied pigs (64.6\%) were positive for HEV RNA in at least one sample. Overall, HEV RNA was found at a statistically higher rate in the 3-4-month-old than in 9-10-month-old animals (95.0\% vs. 42.9\%). Genetic characterization of swine strains identified was performed by sequencing and database alignment. Phylogenetic analysis on the nucleotide sequences from 14 positive PCR products indicated that all strains belonged to genotype 3, clustering in two branches subtypes g3c and g3f. Copyright © 2010 Elsevier B.V. All rights reserved.

This article was published in Vet Microbiol and referenced in Journal of Antivirals & Antiretrovirals

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