Dengue I is rarely fatal, at worst provokingsymptoms such as sudden high fever and bodyache. These symptoms, though severe, last forseven to 10 days and then fade away with rest and medication. Every dengue I infection,however, prompts the body to create special antibodies to fight the invader. If the nextassaulter happens to be dengue II, survival depends on how many antibodies you have.Explains J.N. Pande, professor at AIIMS: "Most of those who died recently must havehad insufficient number of antibodies. Still deadlier, many also die when some antibodiesunwittingly turn treacherous by dislodging the loyal ones from the entrances to the cellsand letting in the madly multiplying virus for the kill." But more than adults, mostof whom have some amount of antibodies, it is children, with little or no defence at all,who succumb readily to the virus.