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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/69258
Cryptococcal Antigenemia in Immunocompromised Human Immunodeficiency Virus Patients in Rural Tanzania: A Preventable Cause of Early Mortality
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Background. Cryptococcal meningitis is a leading cause of death
in people living with human immunodeficiency virus
(HIV)/acquired immune deficiency syndrome. The World Health
Organizations recommends pre-antiretroviral treatment (ART)
cryptococcal antigen (CRAG) screening in persons with CD4 below
100 cells/microL. We assessed the prevalence and outcome of
cryptococcal antigenemia in rural southern Tanzania. Methods. We
conducted a retrospective study including all ART-naive adults
with CD4 <150 cells/microL prospectively enrolled in the
Kilombero and Ulanga Antiretroviral Cohort between 2008 and
2012. Cryptococcal antigen was assessed in cryopreserved pre-ART
plasma. Cox regression estimated the composite outcome of death
or loss to follow-up (LFU) by CRAG status and fluconazole use.
Results. Of 750 ART-naive adults, 28 (3.7%) were CRAG-positive,
corresponding to a prevalence of 4.4% (23 of 520) in CD4 <100
and 2.2% (5 of 230) in CD4 100-150 cells/microL. Within 1 year,
75% (21 of 28) of CRAG-positive and 42% (302 of 722) of
CRAG-negative patients were dead or LFU (P<.001), with no
differences across CD4 strata. Cryptococcal antigen positivity
was an independent predictor of death or LFU after adjusting for
relevant confounders (hazard ratio [HR], 2.50; 95% confidence
interval [CI], 1.29-4.83; P = .006). Cryptococcal meningitis
occurred in 39% (11 of 28) of CRAG-positive patients, with
similar retention-in-care regardless of meningitis diagnosis (P
= .8). Cryptococcal antigen titer >1:160 was associated with
meningitis development (odds ratio, 4.83; 95% CI, 1.24-8.41; P =
.008). Fluconazole receipt decreased death or LFU in
CRAG-positive patients (HR, 0.18; 95% CI, .04-.78; P = .022).
Conclusions. Cryptococcal antigenemia predicted mortality or LFU
among ART-naive HIV-infected persons with CD4 <150
cells/microL, and fluconazole increased survival or
retention-in-care, suggesting that targeted pre-ART CRAG
screening may decrease early mortality or LFU. A CRAG screening
threshold of CD4 <100 cells/microL missed 18% of
CRAG-positive patients, suggesting guidelines should consider a
higher threshold.
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LETANG, Emilio, MULLER, Matthias c., NTAMATUNGIRO, Alex j., KIMERA, Namvua, FAINI, Diana, FURRER, Hansjakob, BATTEGAY, Manuel, TANNER, Marcel, HATZ, Christoph, BOULWARE, David r., GLASS, Tracy r.. Cryptococcal Antigenemia in Immunocompromised Human
Immunodeficiency Virus Patients in Rural Tanzania: A Preventable
Cause of Early Mortality. _Open Forum Infectious Diseases_. 2015. Vol. 2, núm. 2, pàgs. 1-8. [consulta: 23 de gener de 2026]. ISSN: 2328-8957. [Disponible a: https://hdl.handle.net/2445/69258]