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Increase in imported dengue, Germany, 2001-2002.

Christina Frank¹, Irene Schöneberg, Gérard Krause

¹Department of Infectious Disease Epidemiology, Robert Koch Institute, Berlin, Germany. frankc@rki.de

Emerging Infectious Diseases

|June 18, 2004

Summary

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Imported dengue fever cases in Germany significantly increased from 2001 to 2002, primarily linked to travel in Southeast Asia, particularly Thailand. Brazil

Area of Science:

Medical Entomology
Infectious Diseases
Public Health Surveillance

Background:

Dengue fever is a mosquito-borne viral illness.
Germany mandates reporting for dengue fever cases.
International travel is a key factor in disease importation.

Purpose of the Study:

To analyze trends in imported dengue fever in Germany.
To correlate dengue fever cases with international travel patterns.
To identify primary regions of infection acquisition.

Main Methods:

Analysis of national surveillance data for dengue fever from 2001-2002.
Comparison of case data with documented travel histories.
Geographic mapping of infection sources.

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Main Results:

A significant increase in imported dengue fever cases was observed between 2001 and 2002.
Southeast Asia, especially Thailand, was the most frequent region for infection acquisition.
The 2002 dengue epidemic in Brazil was also reflected in German surveillance data.

Conclusions:

Travel-associated dengue fever poses a growing risk in Germany.
Targeted travel advisories for Southeast Asia are crucial.
Global dengue outbreaks impact local surveillance data.