Andrea Nillas

A 30-year-old male with history of IVDU presents with fever. He reports last drug use was one hour prior to arrival and admits to reusing the same cotton filter on multiple occasions. He denies recent cough, chest pain, shortness of breath, abdominal pain, nausea, vomiting, or diarrhea. VS include Temp 101.0°F, HR 110, BP 130/80, RR 18, SpO2 98% on room air. On exam, he is diaphoretic and has track marks on bilateral upper extremities. Lung sounds are clear, and there are no heart murmurs. Complete blood count and metabolic panel are unremarkable. What is the likely diagnosis?