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Nature 448, 734-735 (16 August 2007) | doi:10.1038/448734a; Published online 15 August 2007

Dengue fever climbs the social ladder

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Dengue fever was once a disease restricted to poor people in tropical areas. Its resurgence now threatens middle-class urbanites in cities such as Singapore. Ewen Callaway asks whether Asia's ever-growing wealth will propel a treatment or vaccine to market.

He was a 25-year-old rock-climber, educated to university level and from a middle-class family in Singapore. But last month, Ian Ng hit the headlines for the worst reason.

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