Abstract
Follow-up of previously healthy patients surviving cryptococcal meningitis found that cryptococcal antigen could be detected for more than one year in serum from 38 of 44 (86%) patients and in CSF from 20 of 31 patients (67%), far beyond the time of culture conversion. The speed of titer decline, measured as the number of days for a two fold drop in titer to occur, was slower in serum than in CSF. Speed of decline of antigen titers was much slower in serum and CSF for patients infected with C. gattii than C. neoformans. The speed of decline in CSF and serum titers was also much slower in patients who had received a ventriculoperitoneal shunt for increased intracranial pressure. The variable and extraordinarily slow rate of clearance in our patients did not appear to reflect differences in disease control but rather differences in species and shunting for increased intracranial pressure.
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