Dengue fever (DF), caused by dengue virus, is an arboviral disease characterized by an initial non-specific febrile illness that can sometimes progress to more severe forms manifesting capillary leakage and hemorrhage (dengue hemorrhagic fever, or DHF) and shock (dengue shock syndrome, or DSS).

A pregnancy that ends at a stage in which the fetus is incapable of surviving on its own, defined as the spontaneous loss of a fetus before the 20th week of pregnancy.