Dengue is a mosquito-borne viral fever, transmitted by the bite of an Aedes mosquito that is infected with a dengue virus. The mosquito becomes infested with the dengue virus as soon as it bites a person who's suffering from dengue. Dengue fever is not directly contagious and cannot cannot spread from one person to another. Since the primary cause of dengue fever is a virus, so there's no specific treatment to it. Doctors and health professionals opine that complete bed rest and supportive care forms the basis of dengue treatment. Supportive care is needed to handle the shock-attacks that might happen due to hemoconcentration and bleeding. Monitoring the dengue patient closely and taking note of all vital signs are critical between 2 to 7 days of fever. Increased fluid intake is highly recommended to prevent dehydration. If the patient is not in a condition for oral fluid intake, supplements with intravenous fluids should be given straightaway. Medicines with aspirin content should be avoided as this might worsen bleeding. If the platelet level drops below 20,000 or if there's significant amount of bleeding, platelet transfusion may be needed and the patient should be hospitalised immediately. As far as preventing dengue fever is concerned, there's no specific vaccine for this. All you can do is take safety measure and keep your surroundings clean to stay away from mosquitoes. Depending upon the severity of your condition, the cost of treating dengue patients range from Rs.50,000 – Rs.1,20,000 in private hospitals and it takes minimum 15-20 days' time for a person to completely recover from dengue and get back to normal life.