Americans Researchers find a method by which dengue mosquito die before getting a mature life. Research is at initial stage till now But Americans researcher are hopeful they will find a cure or method by which mosquito cause for dengue fever will be die after sometime of his borne.they are also working at dengue vaccine and US researchers are hopeful for dengue vaccine.currently there is no vaccination available in market for dengue fever and more then 250000 person killed by dengue fever in this world every year. its a very dangerous disease.now a days People of pakistan are very tense from dengue fever.