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Dengue Fever in Japan Shows Global Spread Through Travel

When Japan identified its first local case of dengue in 70 years last month, it became the latest in a string of countries to battle the tropical fever. The most likely importers of the disease: international travelers.

A type of mosquito called aedes albopictus probably got the virus through people arriving from overseas, and infected others, according to Japan’s health ministry. The number of reported cases in the country surpassed 100 last week.