Viral Titers in the Sera of Dengue Patients among Travelers at the Quarantine Station of Kansai International Airport

摘要

Dengue is an acute viral febrile exanthema transmitted by mosquitoes, Aedes aegypti, among and between humans and monkeys. In Japan, outbreaks of dengue attributed to the mosquito, Aedes albopictus occurred in the early 1940s by travel of infected humans (1-4). Dengue is categorized into dengue fever, which has mild symptoms, and dengue hemorrhagicfever combined with dengue shock syndrome (DHF-DSS), which has severe symptoms.DHF-DSS tends to occur from infection in infants born to dengue-immune mothers and secondary infections in children. On the basis of this evidence, immunized status is not preferable even though the primary infections usually result in the mild disease. Since plural outbreaks from importation, even though they are transient outbreaks, increase the number of immunized individuals and opportunities for secondary infection, the importation of dengue should be surveyed and be controlled.