High-risk group includes:
- inpatients status at time of development of fever
- significant medical comorbidity or clinically unstable
- anticipated, prolonged and severe neutropenia (≤100 cells/μL and ≥7 days)
- hepatic insufficiency (5 times ULN for aminotransferase)
- renal insufficiency (creatinine clearance <30 mL/min)
- uncontrolled/progressive cancer
- pneumonia or other complex infections at clinical presentation
- alemtuzumab
- mucositis grade 3-4
- MASCC risk index <21