Seasonality In most dengue endemic areas, transmission of the disease has a distinct seasonality, increasing during the wet seasons (Wichmann and Jelinek 2004). The GeoSentinel Global Surveillance Network, which compiles data from specialised worldwide sentinel travel clinics, reports peaks in incidence in southeast Asia (June, September), South Central Asia (October), South America (March) and the Caribbean (August, October) (Schwartz et al 2008). Complete time out activity 3
DengueNet, a WHO (2012c) initiative, aims to standardise global reporting and surveillance of dengue fever and dengue haemorrhagic fever. DengueNet provides an online database of statistics and information. Reported cases, deaths and circulating virus strains can be evaluated by month, year or geographical area.