(continuous or recurrent) and duration, previous medical history, present and recent drug use, family history, sexual history, country of origin, recent and remote travel, unusual environmental exposures associated with travel or hobbies, and animal contacts.
Definition & etiologies (NEJM 2022;386:463)
Fever (as per above def) on >1 occasion during ≥3 wk & no dx despite 1 wk of evaluation
More likely to be unusual manifestation of common disease than an uncommon disease
In Pts with HIV: >75% causes are infectious, but rarely due to HIV itself