Follow-up, diagnosis, and outcomes of fever of unknown origin cases in whom no diagnosis was established after initial evaluation: an ID-IRI (Infectious Diseases - International Research Initiative) observational retrospective cohort study.

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Title: Follow-up, diagnosis, and outcomes of fever of unknown origin cases in whom no diagnosis was established after initial evaluation: an ID-IRI (Infectious Diseases - International Research Initiative) observational retrospective cohort study.
Authors: Elbahr U; Department of Infectious Diseases, Bahrain Oncology Center, King Hamad University Hospital, Muharraq, Bahrain. drumran_08@hotmail.com., Erdem H; Department of Infectious Diseases and Clinical Microbiology, Gulhane School of Medicine, Turkish Health Sciences University, Ankara, Turkey., Letaief A; Department of Infectious Diseases, Farhat Hached University Hospital, Ibn El Jazzar Medical School, University of Sousse, Sousse, Tunisia., Grgić S; Department of Infectious Diseases, University Clinical Hospital Mostar, Mostar, Bosnia and Herzegovina., Zambrano LI; Department of Morphological Sciences, Faculty of Medical Sciences (FCM), National Autonomous University of Honduras (UNAH), GRINVAR Research Group, Tegucigalpa, Honduras., Yahia WB; Department of Internal Medicine, Farhat Hached University Hospital, Ibn El Jazzar Medical School, University of Sousse, Sousse, Tunisia., Rahimi BA; Department of Infectious Diseases, Kandahar University Medical Faculty, Teaching Hospital, Kandahar, Afghanistan., Baymakova M; Department of Infectious Diseases, Military Medical Academy, Sofia, Bulgaria., Khedr R; Department of Pediatric Oncology, National Cancer Institute - Cairo University, Children Cancer Hospital Egypt, Cairo, Egypt., Nsutebu E; Tropical and Infectious Diseases Division, Sheikh Shakhbout Medical City, Abu Dhabi, United Arab Emirates., Şanlıdağ G; Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey., Koç MM; Department of Infectious Diseases & Clinical Microbiology, School of Medicine, Bezmialem Vakif University, Istanbul, Turkey., Öncü S; Department of Infectious Diseases & Clinical Microbiology, School of Medicine, Adnan Menderes University, Aydin, Turkey., Poposki K; Faculty of Medicine, University Clinic for Infectious Diseases and Febrile Conditions, Skopje, Republic of North Macedonia., Eser-Karlıdağ G; Department of Infectious Diseases and Clinical Microbiology, University of Health Sciences, Elazığ Fethi Sekin City Hospital, Elazığ, Turkey., Sipahi OR; Department of Infectious Diseases, Bahrain Oncology Center, King Hamad University Hospital, Muharraq, Bahrain.; Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey.
Source: BMC infectious diseases [BMC Infect Dis] 2026 May 11; Vol. 26 (1). Date of Electronic Publication: 2026 May 11.
Publication Type: Journal Article; Observational Study; Multicenter Study
Journal Info: Publisher: BioMed Central Country of Publication: England NLM ID: 100968551 Publication Model: Electronic Cited Medium: Internet ISSN: 1471-2334 (Electronic) Linking ISSN: 14712334 NLM ISO Abbreviation: BMC Infect Dis Subsets: MEDLINE
Database: MEDLINE Ultimate
Description
ISSN:1471-2334
DOI:10.1186/s12879-026-13431-2