Living or traveling to a region of the world where the infection is endemic is a risk factor for the disease.  The presence of water-holding containers in and around the home needed for the mosquito's to complete their development sustains the reservoir for disease and is a risk factor.  Risk factors for<unk> e disease include being a neonate or young child, female sex, high body mass index, viral load, genetic polymorphisms and previous infection with DENV-1 if the patient contracts DENV-2 or DENV-3. Diabetes and asthma are risk factors for fatal disease.
Dengue fever risk factors
Lassa fever risk factors
Hantavirus infection risk factors
Malaria risk factors
Ebola risk factors
Typhoid fever risk factors
Paratyphoid fever risk factors
Leptospirosis risk factors