The mosquitoes feed primarily on humans during the daytime and most frequently are found near human habitations.
Dengue viruses are endemic in many countries of the Caribbean, Central and parts of tropical Africa.
In general, dengue activity in most tropical areas of the world has increased in recent years. Sudden onset, high fever, severe headache, joint and muscle pain and rash characterize the illness. The rash appears 3-4 days after onset of fever and may spread from the torso to arms, legs and face. The disease is usually benign and self-limited, although recovery may be prolonged. Many cases of sub-clinical infection occur, but rarely, dengue may present as a severe and fatal hemorrhagic disease.