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