A Pilot Study on Hepatitis E Virus (HEV) Epidemiology in Animal Reservoirs in Bulgaria
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Abstract
Abstract Information on hepatitis E virus (HEV) epidemiology in animal reservoirs in Bulgaria is still lacking. Herein, by screening HEV seropositive sera obtained from Bulgarian swine and wild boars, viral RNA was detected at high prevalence rate (28.2%) in industrial pigs. Sequence analysis of the partial polymerase (RdRp) region revealed the highest genetic correlation with HEVs of genotype (Gt) 3 identified in French and Dutch patients. For three such strains a 700-bp fragment of the ORF 2 gene was generated. On phylogenetic analysis, the Bulgarian strains clustered tightly (93.8-98.3% nt) with human and animal HEVs classified within the Gt3 subtype c.
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