Hi thanks for asking question. The dengue fever is treated symptomatically. In this fever immunity is playing major.For protection from dengue stay away from mosquito bite with help of using net or repellent etc. and keep immunity high. Whenever dengue infection is there , treat it symptomatically. Usually it is selflimited illness.no specific antiviral treatment available. Drink more water, take more fruit juices while sufering from dengue. Enough rest is necessary at that time. Papaiya like fruit helpful in improving platelet count. So in short , adequate immunity with prevention of mosquito bite will protect you from dengue. And if dengue infection is there , symptomatic treatment is done. I hope i have solve your query well.