Since in many cases the definite etiology of FUO is not known therefore its risk<unk>  are uncertain but mostly risk<unk>  that are associated with FUO depends upon the underlying etiology.
Fever of unknown origin risk factors
Typhoid fever risk factors
Paratyphoid fever risk factors
Rheumatic fever risk factors
Strep throat risk factors
Typhus risk factors
Typhoid fever other imaging findings
Relapsing fever laboratory findings