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abstractpubmed· Abstract 2015· item PMID:25695200

Autochthonous dengue fever, Tokyo, Japan, 2014. After 70 years with no confirmed autochthonous cases of dengue fever in Japan, 19 cases were reported during August-September 2014. Dengue virus serotype 1 was detected in 18 patients. Phylogenetic analysis of the envelope protein genome sequence from 3 patients revealed 100% identity with the strain from the first patient (2014) in Japan.