Continuum of Care in Hospitalized Patients With Opioid/Stimulant Use Disorder and Infectious Complications From Drug Use

Inclusion Criteria: 1. Age ≥ 18 years 2. Admitted to study hospital (defined as hospitalized with a primary team that is not Emergency Medicine) 3. Injection opioid or stimulant use in past 90 days - per patient self-report 4. Active suspected or confirmed qualifying infection (see list) at time of admission. Qualifying infections: * Non-vertebral osteomyelitis * Vertebral osteomyelitis or discitis * Epidural, subdural, or extradural abscess * Intracranial or intraspinal abscess * Native joint septic arthritis * Prosthetic joint septic arthritis * Blood stream infection (bacterial or fungal) * Native valve Endocarditis * Prosthetic valve endocarditis * Cardiac Implantable electronic device infection * Infectious pseudoaneurysm and aneurysm * Infected vascular graft * Septic venous thrombosis * Skin and Soft tissue infection (cellulitis, skin abscess, necrotizing fasciitis) * Infected skin ulcer * Orthopedic hardware infection * Muscle abscess/myositis * Central nervous system infection (bacterial or fungal) * Bacterial or fungal ophthalmologic infection * Other abscess * Pulmonary septic emboli * Other acute bacterial or fungal infection deemed appropriate by site study team Exclusion Criteria: * 1\. Infection due to a cause other than injection drug use, per determination of a site PI. 2\. Inability to provide consent due to circumstance (e.g., sedated, intubated), language, or cognitive impairment. 3\. Unwilling to provide informed consent 4. Unable to receive potential interventions due to geography 5. On comfort measures or planned for discharge to hospice care 6. Incarcerated at the time of hospitalization 7. Other criteria at the discretion of the site investigator