After being bitten by a mosquito carrying the dengue virus, the incubation period ranges from 3 to 14 (usually 4 to 7) days before the signs and symptoms of dengue appear. Dengue occurs in two forms:

Dengue Fever (DF)
Dengue Haemorrhagic Fever (DHF)


Figure 1: Dengue fever symptoms. A: Hospital with dengue patients, B: Dengue fever rash, C: Patient with dengue hemorrhagic fever



Video 1. Dengue epidemic in Asia. Example of clinical dengue fever symptoms