Dengue fever is a disease caused by a family of viruses that are transmitted by mosquitoes. It is an acute illness of sudden onset that usually follows a benign course with symptoms such as headache, fever, exhaustion, severe muscle and joint pain, swollen glands (lymphadenopathy), and rash. The presence (the "dengue triad") of fever, rash, and headache (and other pains) is particularly characteristic of dengue.
Study shows that Citronella Oil is a good way to shoo away mosquitoes. The plant is commonly called as "Mosquito Plant". One product I have been using is the Human Heart Nature Citronella Bug Spray. This is being used by my son to avoid the deadly mosquito bite or other insect bites. The smell may not be that pleasant but it goes away easily. This is one effective way to protect our family.
Remember to keep your surrounding clean. This is the easiest and most logical way to prevent Dengue Fever.