Observational Non-Interventional Study Of Febrile Neutropenia Patients To Evaluate Antibacterial Therapeutical Options

Inclusion Criteria: * Patients who are 18 years old and above. * Patients who have undergone allogeneic/autologous or peripheral stem cell transplantation following induction or consolidation treatment due to acute hematological malignancy. * Patients who have a neutrophil count below 500 cells per cubic millimeter (cells/mm\^3) or below 1000 cells/mm\^3 with an expectancy to rapidly decrease below 500 cells/mm\^3. * Patients with a body temperature more than or equal to (≥)38.3 degrees Celsius (101 degrees Fahrenheit) on single oral measurement or detected ≥38.0 degrees Celsius for at least an hour and thus started on antibacterial treatment will be included in the trial. Exclusion Criteria: \- Patients who are pregnant or considering pregnancy.