- Transmitted by Aedes aegypti and Aedes albopictus mosquitoes
- WHO estimates there are 50 million cases of infection annually â 2/5 worldâ s population is at risk
- Found in tropical and sub-tropical regions, predominantly urban & semi-rural areas
- Endemic in 70 countries â 30X increase in last 50 yrs
Source: WHO Dengue Fact Sheet 2010.