TB Research

Opportunistic Cryptococcal Antigenemia in the HAART Era at HIV Epidemic Settings of Northwest Ethiopia

Markos Negash, Tadelo Wondmagegn, Fitsumbrhan Tajebe

Canadian Journal of Infectious Diseases and Medical Microbiology · 2020-09

Abstract

Background . Cryptococcus neoformans is a frequent opportunistic infection in patients with the acquired immunodeficiency syndrome. While the advent of ART reduces the occurrence of cryptococcal meningitis in HIV patients, cryptococcal disease remains a leading cause of morbidity and mortality in the developing world especially in sub-Saharan Africa which is the epicenter of HIV. This study aimed to assess the cryptococcal antigenemia, CD4+ Th cell counts, HIV RNA viral load, and clinical presentations among HIV-positive patients in Northwest Ethiopia. Method . A total of two hundred (200) HIV-positive patients were recruited for this study. Cryptococcus antigenemia prevalence in plasma samples of HIV‐positive patients was determined by using Antigen lateral flow assay (CrAg‐LFA) also, and CD4+ Th cell counts and HIV‐RNA levels were quantified from blood specimen. Patients’ demographic data, clinical manifestation, and concurrent opportunistic infection were recorded. Result . The sex distributions of study participants were 105(52.5%) male and 94(47.5%) female with an age range of 15–65 (mean 39.42 ± 9) years. All patients had a CD4+ T-cell count &lt;100 cells/ µ l with the median 54 cells/ μ l and median HIV-RNA viral load 2.16 × 10 5 RNA copies/ml (50–3.66 × 10 5 RNA copies/ml); the prevalence of cryptococcal antigenemia was found to be 4% in HIV-positive patients. More than half and two third of CrAg‐positive patients had a CD4 count &lt;25 cells/ μ l and HIV viral load &gt;10,000 copies/ml, respectively, as well; Tuberculosis, Candidiasis, and herpes zoster are the most often observed concurrent infections while cryptococcal antigenemia is significantly associated with oral candidiasis (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>p</mml:mi><mml:mo>&lt;</mml:mo><mml:mn>0.001</mml:mn></mml:math>). Conclusion . Although the advent of ART, early diagnosis of cryptococcosis, and application of antifungal interventions, HIV-induced cryptococcal antigenemia positivity in HIV infected individuals is still the countries’ big challenge. Thus, stringent follow-up and case management should be considered.

MeSH terms

  • Medicine
  • Viral load
  • Cryptococcosis
  • Immunology
  • Cryptococcus neoformans
  • Cryptococcal meningitis
  • Cryptococcus
  • Human immunodeficiency virus (HIV)
  • Tuberculosis
  • Virology
  • Internal medicine