Abstract
Recent modeling and consensus building efforts among experts have estimated the global dengue burden to be as high as 390 million dengue infections,1 much higher than the estimated 50 to 100 million cases as reported by the World Health Organization (WHO).2 In the past 50 years, the incidence of dengue has increased 30‐fold.2 The marked increase of dengue over the past decades is in tandem with increasing reports of international travelers acquiring dengue while traveling to tropical and sub‐tropical countries.3 With forecasts of international tourist arrivals predicted to reach 1.8 billion by 2030, 4 travelers will increasingly be affected by this mosquito‐borne disease. The article by the Boston Area Travel Medicine Network in this month's edition of the Journal of Travel Medicine showed that 6.9% travelers from nonendemic countries who had traveled to dengue‐endemic countries for more than 2 weeks but less than 1 year are dengue IgG positive.5 This number is relatively high, higher than that reported in Dutch travelers6 but similar to that reported in Israeli travelers.7 It is also higher than the numbers based on mathematical modeling for travelers to Singapore8 and to Thailand.9 However, because of the retrospective nature of seroprevalence studies, this … Corresponding Author: Annelies Wilder‐Smith, MD, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore. E‐mail: anneliesws{at}gmail.com
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