Does dengue virus cause illness only in immune compromised person?

No anyone is at risk. While severe disease is more common in babies, young children, those with chronic disease like diabetes and asthma, more serious complications, such as dengue hemorrhagic fever can happen randomly. There are 4 serotypes of dengue and if you have been previously infected with one, your risk of serious illness or death increases with infection with each new serotype. Don't get infected a first time!