Data from a large study of syphilis indicate a high rate of neurosyphilis in HIV-infected patients with a CD4-cell count less than or equal to 350 or a serum RPR titer greater than or equal to 1:32.

The Kahn verification test showed a nonsyphilitic type of reaction, with more precipitation at cold than at warm temperatures and a higher titer with normal saline solution than with hypertonic ...

RPR results and titer were unavailable ... Neurologic, ocular, and auditory examination results were normal. Giraldina Trevejo-Nunez,MD, Fellow, Division of Infectious Diseases and Immunology ...