Abstract
A unique European-type HEV strain (HE-JA12-0725) classifiable into subgenotype 3f was recovered from a 66-year-old Japanese female with autochthonous acute hepatitis E, and its entire genomic sequence was determined and characterized. The HE-JA12-0725 strain shared the highest identity of 92.7% with a Spanish swine isolate (EU723514) over the entire genome and possessed a long hypervariable region sequence of 111 amino acids, identical to the 3f strains of European origin. The patient had consumed pork liver obtained via home delivery in Japan approximately two months before the disease onset. These results suggest the circulation of rare 3f HEV strains in Japan.
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