Feasibility and Acceptability of Cryptococcal Antigen Screening and Prevalence of Cryptocococcemia in Patients Attending a Resource-Limited HIV/AIDS Clinic in Malawi

Abstract

Background: The World Health Organization (WHO) recommends screening patients living with AIDS to detect and treat early cryptococcal infection. Methods: The authors evaluated a cryptococcal antigen (CrAg) screening and treatment program at an HIV/AIDS clinic in Malawi. Eligible patients were of age >18 years, had a CD4 count <100 cells/μL or WHO clinical HIV/AIDS stage III or IV. Results: Of 552 patients who presented for care, 113 were eligible, and all (100%) agreed to CrAg screening. Of them, 2 (1.8%; 95% confidence interval [CI]: 0-4.2%) patients were CrAg positive. Among those with CD4 count <100 cells/μL or WHO stage IV, the CrAg prevalence was 3.5% (95% CI: 0-8.4%) and 5.0% (95% CI: 0-15%), respectively. Conclusion: A CrAg screening program was acceptable to new patients in a Malawian HIV/AIDS clinic. The CrAg prevalence for patients with CD4 count < 100 cells/μL and WHO stage IV was consistent with cost-effectiveness estimates. CrAg screening and treatment programs for patients living with AIDS should be expanded.