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Plasma CrAg titer association with CSF CrAg status among 133 persons identified via CrAg screening programs in Ethiopia, South Africa, Tanzania, and Uganda. The prevalence of CSF CrAg positivity increases with both plasma CrAg titer as well as the presence of headache. Abbreviations: CrAg, cryptococcal antigen; CSF, cerebrospinal fluid; neg, negative; pos, positive.
