Eduardo Arathoon

Dr. Eduardo Arathoon

orcid

Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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12 July 2017 in The American Journal of Tropical Medicine and Hygiene
Verified
Journal Article
Closed access
BSBlanca Samayoa
Blanca Samayoa
MRMonika Roy
Monika Roy
ACAngela Ahlquist Cleveland
Angela Ahlquist Cleveland
NMNarda Medina
Narda Medina
DLDalia Lau-Bonilla
Dalia Lau-Bonilla
EAEduardo Arathoon
Eduardo Arathoon
Histoplasmosis is one of the most common and deadly opportunistic infections among persons living with human immunodeficiency virus (HIV)/acquired immune deficiency syndrome in Latin America, but due to limited diagnostic capacity in this region, few data on the burden and clinical characteristics of this disease exist. Between 2005 and 2009, we enrolled patients ≥ 18 years of age with suspected histoplasmosis at a hospital-based HIV clinic in Guatemala City. A case of suspected histoplasmosis was defined as a person presenting with at least three of five clinical or radiologic criteria. A confirmed case of histoplasmosis was defined as a person with a positive culture or urine antigen test for Histoplasma capsulatum. Demographic and clinical data were also collected and analyzed. Of 263 enrolled as suspected cases of histoplasmosis, 101 (38.4%) were confirmed cases. Median time to diagnosis was 15 days after presentation (interquartile range [IQR] = 5–23). Crude overall mortality was 43.6%; median survival time was 19 days (IQR = 4–69). Mycobacterial infection was diagnosed in 70 (26.6%) cases; 26 (25.7%) histoplasmosis cases were coinfected with mycobacteria. High mortality and short survival time after initial symptoms were observed in patients with histoplasmosis. Mycobacterial coinfection diagnoses were frequent, highlighting the importance of pursuing diagnoses for both diseases.

6 July 2011 in BMC Pregnancy and Childbirth
Verified
Journal Article
Open access
PDF file
MJMira Johri
Mira Johri
RMRosa E Morales
Rosa E Morales
JBJean-François Boivin
Jean-François Boivin
BSBlanca E Samayoa
Blanca E Samayoa
JHJeffrey S Hoch
Jeffrey S Hoch
EAEduardo Arathoon
Eduardo Arathoon
Violence against women by their male intimate partners (IPV) during pregnancy may lead to negative pregnancy outcomes. We examined the role of IPV as a potential risk factor for miscarriage in Guatemala. Our objectives were: (1) To describe the magnitude and pattern of verbal, physical and sexual violence by male intimate partners in the last 12 months (IPV) in a sample of pregnant Guatemalans; (2) To evaluate the influence of physical or sexual IPV on miscarriage as a pregnancy outcome.

1 April 2021 in Journal of Fungi
Verified
Journal Article
Open access
PDF file
NMNarda Medina
Narda Medina
Ana Alastruey-IzquierdoAna Alastruey-Izquierdo
Ana Alastruey-Izquierdo
Oscar BonillaOscar Bonilla
Oscar Bonilla
OGOsmar Gamboa
Osmar Gamboa
DMDanicela Mercado
Danicela Mercado
JRJuan Luis Rodriguez-Tudela
Juan Luis Rodriguez-Tudela
Opportunistic infections (OIs) and advanced HIV disease (AHD) contribute to HIV-related mortality. Here, we analyzed the situation of AHD and OIs in a cohort of newly diagnosed HIV patients from Guatemala. We included 2127 adult patients from 13 facilities across the country during 2017 to 2018. Patients were screened for tuberculosis (TB), nontuberculous mycobacteria (NTM), histoplasmosis, and cryptococcal disease, independently of their CD4 cell count. Of the 2127 enrolled patients, 1682 (79.1%) had a CD4 cell count available; of which 52% presented with AHD. Of the Mayan population, 65% had AHD. The overall OI incidence was 21%. Histoplasmosis was the most frequent OI (7.9%), followed by TB (7.1%); 94.4% of these infections occurred in patients with a CD4 < 350 cells/mm3. Mortality at 180 days was significantly higher in those with OIs than without OIs (29.7% vs. 5.9%, p < 0.0001). In one year, this program decreased the OI mortality by 7% and increased the OI treatment by 5.1%. Early OI diagnosis and appropriate therapy reduced OI mortality among newly diagnosed HIV patients in Guatemala. Screening for OIs should be considered in all newly diagnosed HIV patients who have a CD4 cell count < 350 cells/mm3 or those without a CD4 cell count available. To improve results, interventions such as early HIV detection and access to flucytosine and liposomal amphotericin B are required.

17 June 2019 in Journal of Fungi
Verified
Journal Article
Open access
PDF file
Mathieu NacherMathieu Nacher
Mathieu Nacher
TLTerezinha Leitão
Terezinha Leitão
BGBeatriz L. Gómez
Beatriz L. Gómez
Pierre CouppiéPierre Couppié
Pierre Couppié
AAAntoine Adenis
Antoine Adenis
ARAngela Restrepo
Angela Restrepo
Disseminated histoplasmosis is a major opportunistic infection of HIV-infected patients, killing thousands in Latin America each year. Yet, it remains a neglected disease that is often confused with tuberculosis, for lack of simple, affordable, and rapid diagnostic tools. There is great heterogeneity in the level of histoplasmosis awareness. The purpose of this report was to describe how the historical “awakening” to the threat of histoplasmosis came to be in four different centers that have actively described this disease: In Brazil, the Sao José hospital in Fortaleza; in Colombia, the Corporación para Investigaciones Biológicas in Medellin; in French Guiana, Cayenne Hospital; and in Guatemala, the Association de Salud Integral in Guatemala city. In Brazil and French Guiana, the search for leishmaniasis on the buffy coat or skin smears, respectively, led to the rapid realization that HIV patients were suffering from disseminated histoplasmosis. With time and progress in fungal culture, the magnitude of this problem turned it into a local priority. In Colombia and Guatemala, the story is different because for these mycology centers, it was no surprise to find histoplasmosis in HIV patients. In addition, collaborations with the CDC to evaluate antigen-detection tests resulted in researchers and clinicians developing the capacity to rapidly screen most patients and to demonstrate the very high burden of disease in these countries. While the lack of awareness is still a major problem, it is instructive to review the ways through which different centers became histoplasmosis-aware. Nevertheless, as new rapid diagnostic tools are becoming available, their implementation throughout Latin America should rapidly raise the level of awareness in order to reduce the burden of histoplasmosis deaths.

1 July 2021 in International Journal of Infectious Diseases
Verified
Journal Article
Open access
NMNarda Medina
Narda Medina
Ana Alastruey-IzquierdoAna Alastruey-Izquierdo
Ana Alastruey-Izquierdo
Oscar BonillaOscar Bonilla
Oscar Bonilla
BOBrenan Ortíz
Brenan Ortíz
OGOsmar Gamboa
Osmar Gamboa
BGBrenda Guzmán
Brenda Guzmán
To describe the impact of the coronavirus disease 2019 (COVID-19) pandemic on the diagnosis of human immunodeficiency virus (HIV) and deaths from opportunistic infections in Guatemala. A retrospective study was conducted to investigate the impact of the COVID-19 pandemic on people with HIV at a referral clinic (Clinica Familiar Luis Angel García, CFLAG), as well as the disruption of services at a diagnostic laboratory hub (DLH) which provides diagnosis for opportunistic infections to a network of 13 HIV healthcare facilities. Comparative analysis was undertaken using the months March–August from two different time periods: (i) pre-COVID-19 (2017–2019); and (ii) during the COVID-19 period (2020). During the COVID-19 period, 7360 HIV tests were performed at Clinica Familiar Luis Angel García, compared with an average of 16,218 tests in the pre-COVID-19 period; a reduction of 54.7% [95% confidence interval (CI) 53.8–55.4%],Deaths from opportunistic infections at 90 days were 10.7% higher in 2020 compared with 2019 (27.3% vs 16.6%; P = 0.05). Clinical samples sent to the DLH for diagnosis of opportunistic infections decreased by 43.7% in 2020 (95% CI 41.0–46.2%). The COVID-19 pandemic is having a substantial impact on HIV care in Guatemala. Diagnostic services for HIV have been severely affected and deaths from opportunistic infections have increased. The lessons learnt must guide the introduction of strategies to reduce the impact of the pandemic.

16 December 2021 in Microorganisms
Verified
Journal Article
Open access
PDF file
NMNarda Medina
Narda Medina
JRJuan Luis Rodriguez-Tudela
Juan Luis Rodriguez-Tudela
LALuis Aguirre
Luis Aguirre
Luis SalazarLuis Salazar
Luis Salazar
OGOsmar Gamboa
Osmar Gamboa
Ana Alastruey-IzquierdoAna Alastruey-Izquierdo
Ana Alastruey-Izquierdo
Among people with HIV, histoplasmosis represents an important cause of mortality. Previous studies provided estimates of the disease incidence. Here, we compared those estimates with the results obtained from a screening program implemented in Guatemala, which included histoplasmosis detection for people with HIV. To compare the results of this program with previous estimations, a literature search was performed and reports concerning histoplasmosis incidence were analyzed. The screening program enrolled 6366 patients. The overall histoplasmosis incidence in the screening program was 7.4%, which was almost double that estimated in previous studies. From 2017 to 2019, the screening program showed an upward trend in histoplasmosis cases from 6.5% to 8.8%. Histoplasmosis overall mortality among those who were newly HIV diagnosed showed a decrease at 180 days from 32.8% in 2017 to 21.2% in 2019. The screening approach using rapid diagnostic assays detects histoplasmosis cases more quickly, allowing a specific treatment to be administered, which decreases the mortality of the disease. Therefore, the use of these new techniques, especially in endemic areas of histoplasmosis, must be implemented.