Utility of Cryptococcal Antigen Screening and Evolution of Asymptomatic Cryptococcal Antigenemia among HIV-Infected Women Starting Antiretroviral Therapy in Thailand

J Int Assoc Provid AIDS Care. 2014 Sep-Oct;13(5):434-7. doi: 10.1177/2325957413500533. Epub 2013 Sep 3.

Abstract

Cryptococcal meningitis (CM) remains a significant HIV-associated opportunistic infection in Southeast Asia and Africa, with a high burden of disease and a high mortality rate despite the availability of antiretroviral therapy (ART). We retrospectively examined the utility of cryptococcal antigen screening to identify risk for CM among 211 Thai women initiating ART. Antigenemia prevalence was 11% (n = 9) among 84 women with a CD4 count <100 cells/mm(3). Screening identified all women who later developed CM. Cryptococcal antigen titers decreased over time with ART. Our study confirmed findings from previous studies in Thailand and South Africa and provided novel observational data regarding the course of cryptococcal antigenemia in patients initiating ART and the poor efficacy of low-dose fluconazole prophylaxis in preventing CM among patients with antigenemia.

Keywords: HIV; cryptococcal antigen; cryptococcal meningitis; cryptococcus; screening.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • AIDS-Related Opportunistic Infections* / diagnosis
  • AIDS-Related Opportunistic Infections* / epidemiology
  • AIDS-Related Opportunistic Infections* / microbiology
  • Adult
  • Anti-Retroviral Agents / therapeutic use*
  • Antigens, Fungal / blood*
  • CD4 Lymphocyte Count
  • Cryptococcus / isolation & purification
  • Fungemia* / diagnosis
  • Fungemia* / epidemiology
  • Fungemia* / microbiology
  • HIV Infections / drug therapy*
  • HIV Infections / epidemiology
  • Humans
  • Male
  • Meningitis, Cryptococcal* / diagnosis
  • Meningitis, Cryptococcal* / epidemiology
  • Meningitis, Cryptococcal* / microbiology
  • Retrospective Studies
  • Thailand / epidemiology

Substances

  • Anti-Retroviral Agents
  • Antigens, Fungal