A 45-year-old man presents with headache, low-grade fever, night sweats, and neck stiffness that have persisted for over 6 weeks. He has a history of HIV infection but is not on antiretroviral therapy. A lumbar puncture is performed, and the cerebrospinal fluid (CSF) analysis shows lymphocytic pleocytosis, decreased glucose, and elevated protein. Which of the following is the most likely cause of this patient’s condition?
