A 48-year-old HIV positive homeless male is brought to the emergency room by EMS after being found under a highway overpass complaining of a 10/10 bilateral squeezing headache that has progressed over the last 9 days.

On physical exam, he is confused, febrile at 102.1 0F, and nauseated. A lumbar puncture is performed that demonstrates a normal CSF opening pressure, an elevated WBC count with lymphocytic predominance, decreased glucose, and an elevated protein count. The CSF is sent...