Dengue Virus Exported from Côte d’Ivoire to Japan, June 2017

Dengue Virus Exported from Côte d’Ivoire to Japan, June 2017

Since April 2017, a dengue fever outbreak has been ongoing in Côte d'Ivoire. We diagnosed dengue fever (type 2 virus) in a traveler returning to Japan from Côte d'Ivoire. Phylogenetic analysis revealed strain homology with the Burkina Faso 2016 strain. This case may serve as an alert to possible disease spread outside Africa.

Importation of Dengue Virus Type 3 to Japan from Tanzania and Côte d’Ivoire

Travelers can introduce viruses from disease-endemic to non-disease-endemic areas. Serologic and virologic tests confirmed dengue virus infections in 3 travelers returning to Japan: 2 from Tanzania and 1 from Cote d'Ivoire. Phylogenetic analysis of the envelope gene showed that 2 genetically related virus isolates belonged to dengue virus type 3 genotype III.

Dengue Virus Type 2 in Travelers Returning to Japan from Sri Lanka, 2017

In June 2017, dengue virus type 2 infection was diagnosed in 2 travelers returned to Japan from Sri Lanka, where the country's largest dengue fever outbreak is ongoing. Travelers, especially those previously affected by dengue fever, should take measures to avoid mosquito bites.

Dengue virus type 2 isolated from an imported dengue patient in Japan: first isolation of dengue virus from Nepal.

We report the isolation of dengue virus type 2 from a dengue patient returning to Japan from Nepal in October, 2004. This is the first isolate of dengue virus in Nepal. According to nucleotide homology, the virus was closest to a dengue virus type 2 isolate from India.

Highlights from the Current Issue: June 2017.