Figure 1Number of outbound passengers by destination country in Korea in 2016 and 2017. Yearly number of travelers visiting the designated destination with dengue or Zika virus transmission is shown. Numbers at the top of white bars represent the absolute value in 2017.
Figure 2Estimates of reporting coverage of imported dengue cases in Korea by destination country in 2016 and 2017. Vertical axis measures the reporting coverage out of the total volume of dengue virus infections, inclusive of the risk of symptomatic infection. Depending on year of travel, epidemiological situations of dengue transmission are variable, and estimates are also different by year of travel. The whiskers represent the 95% confidence interval, derived using the Wald method.
Table 1Estimated number and risk of zika virus infection among Korean travelers visiting Brazil in 2016 and the Maldives in 2017.
Brazil |
Estimate (95% confidence interval) |
Number of infected individuals (persons) |
59.1 (44.0, 74.1) |
Risk of infection per traveler (%) |
0.12 (0, 0.35) |
Symptomatic and reported (%) |
1.99×10−3 (0, 5.88×10−3) |
|
Maldives |
|
Number of infected individuals (persons) |
345.6 (309.1, 382.0) |
Risk of infection per traveler (%) |
0.99 (0, 2.36) |
Symptomatic and reported (%) |
5.75×10−3 (0, 13.7×10−3) |