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Volume 14, Number 7—July 2008

Seasonality, Annual Trends, and Characteristics of Dengue among Ill Returned Travelers, 1997–2006

Eli Schwartz*†, Leisa H. Weld‡, Annelies Wilder-Smith§, Frank von Sonnenburg¶, Jay S. Keystone#**, Kevin C. Kain#**, Joseph Torresi††‡‡, David O. Freedman§§Comments to Author , and for the GeoSentinel Surveillance Network
Author affiliations: *Chaim Sheba Medical Center, Tel Hashomer, Israel; †Tel Aviv University, Tel Aviv, Israel; ‡Statistical Consult, Victoria, British Columbia, Canada; §National University Singapore, Singapore; ¶University of Munich, Munich, Germany; #Toronto General Hospital, Toronto, Ontario, Canada; **University of Toronto, Toronto; ††University of Melbourne, Parkville, Victoria, Australia‡‡Royal Melbourne Hospital, Parkville; §§University of Alabama at Birmingham, Birmingham, Alabama, USA;

Main Article

Table 1

Dengue and malaria diagnoses as a proportion of all morbidity in ill returned travelers according to region or country of acquisition

Region* or country of exposure No. ill returned travelers with dengue No. ill returned travelers with malaria Total no. ill returned travelers Dengue proportionate morbidity† Malaria proportionate morbidity†
Southeast Asia 264 103 3,694 71 28
Thailand 154 9 1,523 101 5
South Central Asia 90 70 3,303 27 21
South America 40 49 2,427 16 20
Central America
Africa 25 1,216 7,231 3 168
Sub-Saharan Africa
Other‡ or multiple regions of exposure 7 23 4,443 2 5
Country missing
Total 522 1,605 24,920 21 64

*Regions defined per (9).
†Proportionate morbidity expressed per 1,000 ill returned travelers seen at GeoSentinel clinics.
‡No cases were acquired in Canada, United States, Western Europe, Japan, or Australia.

Main Article

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Main Article

1In addition to the authors, members of the GeoSentinel Surveillance Network who contributed data are: Elizabeth Barnett, Boston University, Boston, Massachusetts, USA; Graham Brown, Royal Melbourne Hospital, Parkville, Victoria, Australia; Giampiero Carosi and Francesco Castelli, University of Brescia, Brescia, Italy; Lin Chen and Mary Wilson, Harvard University, Cambridge, Massachusetts, USA; Bradley Connor, Cornell University, New York, New York, USA; Jean Delmont and Philippe Parola, Hôpital Nord, Marseille, France; Devon Hale and Stefanie Gelman, University of Utah, Salt Lake City, Utah, USA; Elaine Jong and Jean Haulman, University of Washington, Seattle, Washington, USA; Phyllis Kozarsky and Carlos Franco, Emory University, Atlanta, Georgia, USA; Carmelo Licitra, Orlando Regional Health Center, Orlando, Florida, USA; Louis Loutan and Francois Chappuis, University of Geneva, Geneva, Switzerland; Poh Lian Lim, Tan Tock Seng Hospital, Singapore; Michael Lynch, Fresno International Travel Medical Center, Fresno, California, USA; Susan McLellan, Tulane University, New Orleans, Louisiana, USA; Prativa Pandey, CIWEC Clinic Travel Medicine Center, Kathmandu, Nepal; Cecilia Perret, Pontificia Universidad Católica de Chile, Santiago, Chile; Bradley Sack and Robin McKenzie, Johns Hopkins University, Baltimore, Maryland, USA; Hiroko Sagara, Yokohama Municipal Citizen's Hospital, Yokohama, Japan; Marc Shaw, Worldwise Travellers Health and Vaccination Centre, Auckland, New Zealand; Robert Steffan and Patricia Schlagenhauf, University of Zurich, Zurich, Switzerland; William Stauffer and Patricia Walker, University of Minnesota, Minneapolis, Minnesota, USA; and Murray Wittner, Albert Einstein School of Medicine, Bronx, New York, USA.

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