Volunteer for NIAID-funded clinical studies related to Dengue Fever on ClinicalTrials.gov.
Dengue fever can be caused by any one of four types of dengue virus: DEN-1, DEN-2, DEN-3, and DEN-4. You can be infected by at least two if not all four types at different times during your lifetime, but only once by the same type.
Last Updated September 26, 2006