Effect of the BioFire FilmArray (BCID2) for the Rapid Detection of Bloodstream Infection in Haematologic Patients With Febrile Neutropenia

Inclusion Criteria: * Age ≥18 years * Patients hospitalised for the treatment of haematological malignancy or undergoing an autologous or allogeneic hematopoietic stem cell transplant or receiving CAR-T cell therapy * Patients presenting with febrile neutropenia (defined as axillary temperature ≥ 38.0°C and \<500 neutrophils/mm3 or \<1000 with an expected rapid decrease in 24-48 hours), * Patient to whom blood cultures are ordered as standard care for the microbiological diagnosis of the febrile neutropenia episode. Exclusion Criteria: * Axillary temperature \<37.5ºC. * High clinical suspicion of a non-infectious cause of fever at the moment when blood cultures are drawn (high suspicion of drug related fever, infusion reaction). * Previously enrolled patients in whom the time between inclusion and the current episode is less than four weeks. * Patients with febrile neutropenia in whom no blood cultures are drawn.