Clinical and epidemiological characteristics of imported dengue fever among inbound passengers: Infrared thermometer–based active surveillance at an international airport

English version

Autoři: Chia-ping Su ^aff001; Ying-Yun Wang ^aff001; Kuei-Chu Ku ^aff001; Chi-Tai Fang ^aff002
Působiště autorů: Taiwan Centers for Disease Control, Ministry of Health and Welfare, Taipei City, Taiwan ^aff001; Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan ^aff002; Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, Taiwan ^aff003; Division of Infectious Diseases, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan ^aff004
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0225840

Souhrn

Background

Dengue fever is endemic in tropical and subtropical areas, especially Southeast Asia. International air travel facilitates the spread of dengue across and within borders. To date, no predictive factors have been established for assessing risk of dengue among febrile travelers.

Methods

Since 2006, Taiwan has operated a program of infrared thermometer–based non-contact active surveillance at Taoyuan International Airport (TPE). All inbound passengers from dengue-endemic countries who are febrile (tympanic temperature ≥38°C) undergo routine laboratory testing for dengue. We analyzed clinical and epidemiological characteristics of all tested passengers entering Taiwan via TPE in 2011 to identify the predictive factors of dengue infection.

Results

In 2011, of the 3,719 febrile passengers from dengue-endemic countries, 74 (2.0%) had laboratory-confirmed dengue infection. Multivariable logistic regression analysis revealed that those who were aged ≥60 years (adjusted odds ratio [aOR], 8.7; 95% confidence interval [CI], 2.6–29.6) and had self-reported fever (aOR, 2.5; 95% CI, 1.5–4.1), skin rashes (aOR, 11.0; 95% CI, 3.4–35.1), or a tympanic temperature ≥39°C (aOR, 2.9; 95% CI, 1.7–4.9) were significantly more likely to have dengue (all p values < 0.05). Compared with travelers who stayed in dengue-endemic countries for ≤7 days, those who traveled 8–14, 15–21, 22–28, and ≥29 days were also more likely to be infected (aORs of 10.2, 14.9, 39.0 and 12.0, respectively).

Conclusion

These clinical and epidemiological features can facilitate timely recognition and diagnosis of imported dengue in febrile inbound passengers and therefore help prevent domestic transmission of dengue virus.

Klíčová slova:

Respiratory infections – Taiwan – Dengue virus – Infectious disease surveillance – Dengue fever – Quarantines – Airports – Rashes

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