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1.
Open Forum Infect Dis ; 11(4): ofae090, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38567195

RESUMEN

Background: Chronic pulmonary aspergillosis (CPA) is an underrecognized but common complication of pulmonary tuberculosis. In Nigeria, a tuberculosis-endemic country, there is currently no provision to monitor the development of CPA in patients treated for tuberculosis. This study determined the prevalence and incidence of CPA in Lagos, Nigeria. Methods: A prospective longitudinal study of patients with previously managed tuberculosis was conducted between June 2021 and May 2022. The study cohorts were assessed at 3-month intervals, and the following were collected: sociodemographic data, chest radiographic findings, sputum samples for fungal culture, and venous blood samples for Aspergillus immunoglobulin G estimation. CPA cases were determined using the case definition for resource-constrained countries. Descriptive and inferential statistics were used, and significance was set at a probability of 5% (P < .05). Results: Of the 141 patients recruited, 79 (56.0%) were in the retreatment and 62 (44.0%) in the posttreatment tuberculosis group. The median age (interquartile range) was 40 (30-52) years, with a male-to-female ratio of 1.1:1. Ninety-seven patients (69%) had a GeneXpert test done, of whom 63 (64.9%) were GeneXpert negative. Cough was the most common symptom, with 15 (11%) patients having hemoptysis. The rate of CPA increased steadily as the study progressed: 44 (31.2%) at commencement, 45 (34.9%) at 3 months, 49 (42.6%) at 6 months, and 51 (54.3%) at 9 months. Thus, the overall prevalence of CPA was 49.7%, and the incidence was 6.1%. Conclusions: CPA is common in Nigeria and its true burden may still be underestimated. Increased awareness of CPA as a posttuberculosis lung disease is advocated. Evaluation for CPA should be incorporated in patients' work-up for tuberculosis.

2.
Int Health ; 2024 Mar 13.
Artículo en Inglés | MEDLINE | ID: mdl-38477188

RESUMEN

The coronavirus disease 2019 pandemic emphasised the importance of laboratory preparedness, including molecular diagnostic capacity, in the control of infectious disease outbreaks. This article reflects on diagnostic capacity-building opportunities presented by the pandemic, the challenges experienced along the way and the lessons learned from the perspective of a university teaching hospital in Southern Nigeria. We advocate for these lessons to inform strategic planning for laboratory preparedness at subnational, national and continental levels.

3.
Med Mycol ; 62(1)2024 Jan 09.
Artículo en Inglés | MEDLINE | ID: mdl-38154488

RESUMEN

On May 30th and 31st, 2023, delegates representing various African subregions, together with global representatives from the International Society of Human and Animal Mycology (ISHAM), the European Confederation of Medical Mycology (ECMM), the United States Centre for Disease Control and Prevention (CDC), and Global Action for Fungal Infections (GAFFI), convened in Nairobi, Kenya under the aegis of the Pan African Mycology Working Group, a working group of ISHAM. The meeting objectives were, amongst others, to deliberate on a continental response to the World Health Organisation Fungal Priority Pathogen List and facilitate interaction between global and regional leaders. Country delegates and international speakers addressed Africa's fungal disease burden; capacity for diagnosis and management; ongoing surveillance; knowledge gaps and trends in invasive fungal diseases such as Candida auris, mucormycosis, aspergillosis, and Acquired Immune Deficiency Syndrome (AIDS)-related mycoses; and current laboratory practice. During the technical sessions, expert panels deliberated on establishing and financing of national/regional surveillance networks for mycoses; establishing and sustaining African-led collaborations; expanding on existing laboratory and point-of-care diagnostic capacity as well as planning a mycology reference laboratory service and network in Africa. The meeting also highlighted successful African-led collaborations, capacity building, and clinical trial initiatives. The meeting conclusions informed the resolutions of the Nairobi Declaration calling for improved awareness; strong collaborations between clinical and laboratory teams across Africa; improved fungal disease surveillance within the continent; access to antifungals and diagnostics; and leveraging qualified human resources for mycology present within and outside Africa to facilitate trainings, collaborations, and exchanges.


This review presents the current state of the art in medical mycology in Africa discussed at the first scientific meeting of the Pan African Mycology Working Group, an affiliate of the International Society for Human and Animal Mycology (ISHAM) held in Nairobi, Kenya on May 30th and 31st, 2023.


Asunto(s)
Infecciones Fúngicas Invasoras , Mucormicosis , Micosis , Humanos , Kenia/epidemiología , Micosis/diagnóstico , Micosis/tratamiento farmacológico , Micosis/epidemiología , Micosis/veterinaria , Mucormicosis/tratamiento farmacológico , Mucormicosis/veterinaria , Infecciones Fúngicas Invasoras/diagnóstico , Infecciones Fúngicas Invasoras/veterinaria , Antifúngicos/uso terapéutico
5.
Life (Basel) ; 13(3)2023 Mar 03.
Artículo en Inglés | MEDLINE | ID: mdl-36983844

RESUMEN

Gastrointestinal histoplasmosis (GIH) is infrequently described in people without underlying HIV infection. We aimed to compare the clinical presentation of GIH in people with and without HIV infection. We conducted a literature search of published cases of GIH from 2001-2021 and found 212 cases. Of these, 142 (67.0%) were male, and 124 (58.5%) had HIV infection. Most cases were from North America (n = 88, 41.5%) and South America (n = 79, 37.3%). Of the 212 cases, 123 (58.0%) were included in both clinical and pathological analyses. The remainder were excluded as details about clinical and pathological findings were not available. Of the 123 cases, 41 had HIV infection while 82 were without HIV infection. The diagnosis was predominantly by histopathology (n = 109, 88.6%). A significant proportion of people with HIV infection had abdominal pain as the most predominant symptom of GIH compared to those without HIV infection (65.9% versus 41.9%, p < 0.05). The colon was the most affected site with a slightly higher proportion in those with HIV infection compared with cases without HIV infection (46.3% versus 42.7%). The commonest pathologic findings were caecal and ileal ulcers. Caecal ulcers were significantly more frequent in cases with HIV infection compared to those without HIV (32.1% versus 7.1%, p < 0.05). Despite being more common in people with HIV infection, GIH also affects people without HIV infection with similar clinical presentations.

6.
PLOS Glob Public Health ; 3(1): e0001313, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36963010

RESUMEN

As of 2018, cryptococcal antigen (CrAg) screening in patients with advanced human immunodeficiency virus (HIV) disease (AHD) was not routinely implemented in Nigeria despite being recommended in the national HIV treatment guidelines. Our aim was to determine the prevalence and risk factors for asymptomatic cryptococcal antigenemia in adult people living with HIV (PLHIV) in Nigeria to advocate for the implementation of routine CrAg screening. A descriptive cross-sectional study and CrAg screening of consecutive adult PLHIV with CD4 counts ≤200 cells/µL was conducted from April 2018 to April 2019 at HIV clinics in eleven tertiary hospitals spread across Nigeria's six geopolitical regions. Prevalence of asymptomatic cryptococcal antigenemia was estimated by facility and geopolitical zone. Logistic regression was conducted to identify risk factors for cryptococcal antigenemia. In total, 1,114 patients with AHD were screened. The overall prevalence of asymptomatic cryptococcal antigenemia was 3.9% with wide variation across facilities (range: 0/75 [0%]- 15/122 [12.3%]) and geopolitical zones (range: 0/75 [0%]-19/279 [6.8%]). Prevalence of antigenemia was highest in the South-West (19/279 [6.8%]) and lowest in the North-East (0/75 [0%]). Prevalence was 5.2% (26/512) and 3.2% (18/561) in patients with CD4<100 and CD4 of 101-200, respectively. Of all patients with antigenemia, 50% were on antiretroviral therapy (ART) at the time of having a positive CrAg test. In adjusted analysis, cryptococcal antigenemia was significantly less in patients on ART and patients who had completed any formal education. The survey showed a high overall burden of cryptococcal antigenemia in Nigeria, with variable prevalence across geopolitical regions. We provided valuable evidence for implementing routine CrAg screening of AHD patients in Nigeria which has commenced in selected centres.

7.
Mycoses ; 66(7): 555-562, 2023 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-36856432

RESUMEN

Mucorales fungi cause mucormycosis, an invasive and rapidly progressive disease which increasingly affects mostly immunocompromised but also immunocompetent individuals. The objective of this study was to highlight the epidemiology, diagnostic modalities, treatment and overall survival of mucormycosis in Africa. We searched for relevant publications in PubMed, Google Scholar and African Journal Online databases covering the period 1960-2022. A total of 147 articles were identified, of which 66 were included in the review, detailing 408 individual cases from 12 African countries; 330 (80.9%) from North Africa, 63 (15.4%) from Southern Africa, seven (1.7%) from East Africa, seven (1.7%) from West Africa and a single case (0.2%) from Central Africa. The most frequently described clinical forms were rhino-orbital-cerebral (n = 307, 75.2%) and gastrointestinal (n = 51, 12.5%). Diabetes mellitus, COVID-19, malignancies and neutropaenia were the commonest underlying risks in 203 (49.8%), 101 (24.8%), 65 (15.9%) and 53 (13.0%) cases respectively. Most cases, 296 (72.5%) were diagnosed by histopathology. Fungal aetiology was identified in 38 (9.3%), of which the commonest was Rhizopus oryzae/arrhizus (27/38, 71.1%). Of the 408 cases, 334 (81.9%) patients received antifungal therapy, while 244 (59.8%) had surgery. In cases with a specified outcome, survival rate was 59.1% (228/386). Based on case reporting, a substantial burden of mucormycosis occurs in North Africa but the disease is rarely reported in most of the sub-Saharan region. Establishing a comprehensive registry for standardised data collection could improve understanding of the epidemiology of mucormycosis in the region.


Asunto(s)
COVID-19 , Mucorales , Mucormicosis , Humanos , Mucormicosis/diagnóstico , Mucormicosis/tratamiento farmacológico , Mucormicosis/epidemiología , Resultado del Tratamiento , África , Rhizopus oryzae , Antifúngicos/uso terapéutico , Prueba de COVID-19
8.
J Mycol Med ; 33(4): 101438, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-38358796

RESUMEN

Fungal diseases impose an escalating burden on public health in Africa, exacerbated by issues such as delayed diagnosis, inadequate therapy, and limited access to healthcare resources, resulting in significant morbidity and mortality. Effectively tackling these challenges demands a comprehensive approach encompassing research, training, and advocacy initiatives. Recent clinical mycology surveys conducted by Global Action for Fungal Infection (GAFFI) and the European Confederation of Medical Mycology/International Society for Human and Animal Mycology (ECMM/ISHAM) have underscored gaps in fungal diagnostics and the availability and accessibility of antifungal therapy in Africa. The World Health Organization (WHO) Fungal Priority Pathogens List (FPPL) identifies fungi of critical or high importance to human health, providing a roadmap for action and highlighting the urgent need for prioritizing fungal diseases and developing targeted interventions within the African context. To enhance diagnosis and treatment, it is imperative to invest in comprehensive training programs for healthcare workers across all levels and disciplines. Equipping them with the necessary knowledge and skills will facilitate early detection, accurate diagnosis, and appropriate management of fungal infections. Moreover, implementation science research in medical mycology assumes a pivotal role in bridging the gap between knowledge and practice. By identifying the barriers and facilitators that influence the adoption of diagnostic techniques and public health interventions, tailored strategies can be formulated to improve their implementation within healthcare settings. Advocacy plays a critical role in raising awareness regarding the profound impact of fungal diseases on public health in Africa. Engaging policymakers, healthcare providers, researchers, industry experts and communities underscore the importance of addressing these diseases and galvanize efforts for change. Substantial investment in surveillance, research and development specifically focused on fungal diseases is indispensable for advancing our understanding of local epidemiology, developing effective interventions, and ultimately improving patient outcomes. In conclusion, closing the gaps in diagnosing and treating fungal diseases in Africa demands concerted research and advocacy initiatives to ensure better healthcare delivery, reduced mortality rates, and improved public health outcomes.


Asunto(s)
Personal de Salud , Micosis , Animales , Humanos , África/epidemiología , Micología , Micosis/diagnóstico , Micosis/tratamiento farmacológico , Micosis/epidemiología , Salud Pública
9.
Emerg Infect Dis ; 28(11): 2261-2269, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36286009

RESUMEN

We sought to determine the prevalence of probable disseminated histoplasmosis among advanced HIV disease (AHD) patients in Nigeria. We conducted a cross-sectional study in 10 sites across 5 of 6 geopolitical zones in Nigeria. We identified patients with urinary samples containing CD4 cell counts <200 cells/mm3 or World Health Organization stage 3 or 4 disease who also had >2 clinical features of disseminated histoplasmosis, and we tested them for Histoplasma antigen using a Histoplasma enzyme immune assay. Of 988 participants we recruited, 76 (7.7%) were antigen-positive. The 76 Histoplasma antigen-positive participants had significantly lower (p = 0.03) CD4 counts; 9 (11.8%) were also co-infected with tuberculosis. Most antigen-positive participants (50/76; 65.8%; p = 0.015) had previously received antiretroviral treatment; 26/76 (34.2%) had not. Because histoplasmosis is often a hidden disease among AHD patients in Nigeria, Histoplasma antigen testing should be required in the AHD package of care.


Asunto(s)
Infecciones por VIH , Histoplasmosis , Humanos , Histoplasmosis/diagnóstico , Histoplasmosis/epidemiología , Histoplasmosis/tratamiento farmacológico , Prevalencia , Estudios Transversales , Nigeria/epidemiología , Histoplasma , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología
10.
Med Mycol ; 60(9)2022 Sep 29.
Artículo en Inglés | MEDLINE | ID: mdl-36073757

RESUMEN

Invasive fungal infections (IFIs) and medical mycology receive little attention in Ghana. However, the present evolution of biomarker assays for IFIs, offers an opportunity for an increased access to fungal laboratory testing in resource-limited settings, and probably make a case for availability of essential antifungal agents. Using surveys and personal communications, the state of medical mycology and IFI in Ghana were highlighted. Inadequate awareness and insufficient access to fungal diagnostics and therapeutics were identified as the key challenges, the establishment of the Ghana Medical Mycology Society was discussed, and recommendations were made to improve the status quo.


Invasive fungal infections (IFIs) receive little attention in Ghana, despite its growing relevance globally. Using surveys and personal communications, the main challenges were identified, and the formation of the Ghana Medical Mycology Society was discussed as a tool to improve the status quo.


Asunto(s)
Infecciones Fúngicas Invasoras , Micología , Animales , Antifúngicos/uso terapéutico , Ghana , Infecciones Fúngicas Invasoras/diagnóstico , Infecciones Fúngicas Invasoras/tratamiento farmacológico , Infecciones Fúngicas Invasoras/microbiología , Infecciones Fúngicas Invasoras/veterinaria , Encuestas y Cuestionarios
11.
J Fungi (Basel) ; 8(5)2022 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-35628715

RESUMEN

Fungal infections commonly present with myriad symptoms that mimic other clinical entities, notable amongst which is tuberculosis. Besides histoplasmosis and chronic pulmonary aspergillosis, which can mimic TB, this review has identified several other fungal infections which also do. A total of 80 individual cases misdiagnosed as TB are highlighted: aspergillosis (n = 18, 22.5%), histoplasmosis (n = 16, 20%), blastomycosis (n = 14, 17.5%), cryptococcosis (n = 11, 13.8%), talaromycosis (n = 7, 8.8%), coccidioidomycosis (n = 5, 6.3%), mucormycosis (n = 4, 5%), sporotrichosis (n = 3, 3.8%), phaeohyphomycosis (n = 1, 1.3%) and chromoblastomycosis (n = 1, 1.3%). Case series from India and Pakistan reported over 100 cases of chronic and allergic bronchopulmonary aspergillosis had received anti-TB therapy before the correct diagnosis was made. Forty-five cases (56.3%) had favorable outcomes, and 25 (33.8%) died, outcome was unclear in the remainder. Seventeen (21.3%) cases were infected with human immunodeficiency virus (HIV). Diagnostic modalities were histopathology (n = 46, 57.5%), culture (n = 42, 52.5%), serology (n = 18, 22.5%), cytology (n = 2, 2.5%), gene sequencing (n = 5, 6.3%) and microscopy (n = 10, 12.5%) including Gram stain, India ink preparation, bone marrow smear and KOH mount. We conclude that the above fungal infections should always be considered or ruled out whenever a patient presents with symptoms suggestive of tuberculosis which is unconfirmed thereby reducing prolonged hospital stay and mortalities associated with a delayed or incorrect diagnosis of fungal infections.

12.
PLOS Glob Public Health ; 2(8): e0000578, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36962763

RESUMEN

Screening for coronavirus disease 2019 (COVID-19) in emergency rooms of health facilities during outbreaks prevents nosocomial transmission. However, effective tools adapted for use in African countries are lacking. This study appraised an indigenous screening and triage tool for COVID-19 deployed at the medical emergency room of a Nigerian tertiary facility and determined the predictors of a positive molecular diagnostic test for COVID-19. A cross-sectional study of all patients seen between May and July 2020 at the Accident and Emergency of the University of Benin Teaching Hospital was conducted. Patients with any one of the inputs- presence of COVID-19 symptoms, history of international travel, age 60 years and above, presence of comorbidities and oxygen saturation < 94%- were stratified as high-risk and subjected to molecular testing for Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Data was obtained from the screening record book patterned after a modified screening tool for COVID-19, deidentified and entered into IBM-SPSS version 25.0. Binary logistic regression was conducted to determine significant predictors of a positive SARS-CoV-2 test. The level of significance was set at p < 0.05. In total, 1,624 patients were screened. Mean age (standard deviation) was 53.9±18.0 years and 651 (40.1%) were 60 years and above. One or more symptoms of COVID-19 were present in 586 (36.1%) patients. Overall, 1,116 (68.7%) patients were designated high risk and tested for SARS-CoV-2, of which 359 (32.2%) were positive. Additional inputs, besides symptoms, increased COVID-19 detection by 108%. Predictors of a positive test were elderly age [AOR = 1.545 (1.127-2.116)], co-morbidity [AOR = 1.811 (1.296-2.530)] and oxygen saturation [AOR = 3.427 (2.595-4.528)]. This protocol using additional inputs such as oxygen saturation improved upon symptoms-based screening for COVID-19. Models incorporating identified predictors will be invaluable in resource limited settings.

13.
Afr J Lab Med ; 10(1): 1326, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33937003

RESUMEN

BACKGROUND: Molecular detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is at the forefront of the global response to the coronavirus disease 2019 (COVID-19) pandemic. However, molecular diagnostic capabilities are poorly developed in many African countries. Efforts by the Nigeria Centre for Disease Control and other public health agencies to scale up facilities for molecular testing across the continent are well documented, but there are few accounts from the laboratories at the frontline. INTERVENTION: As part of an institutional response to the COVID-19 pandemic, the University of Benin Teaching Hospital, Benin City, Nigeria, signed a memorandum of understanding with a World Bank-supported institution to obtain a non-proprietary testing platform, renovated an existing molecular virology laboratory and validated the test process to make SARS-CoV-2 testing readily available for decision-making by frontline health workers. These efforts resulted in the University of Benin Teaching Hospital's inclusion in the Nigeria Centre for Disease Control COVID-19 molecular laboratory network. The laboratory achieved a turnover of 12 123 tests within 7 months of operation. Challenges faced and dealt with include incompatible equipment, limited skilled manpower, unstable (unreliable) electric power supply, disrupted procurement and supply chain, and significant overhead costs. LESSONS LEARNT: Molecular diagnostic capability is essential in laboratory preparedness for pandemic response and can be achieved by establishing collaborative networks in low-resource settings. RECOMMENDATIONS: Molecular diagnostic capabilities attained during the COVID-19 pandemic should be maintained by governmental support of the local biotechnology sector, collaboration with partners and stakeholders and the expansion of diagnostics to include other diseases of public health importance.

14.
Trans R Soc Trop Med Hyg ; 115(7): 727-730, 2021 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-33690864

RESUMEN

Africa was the last continent to be affected by the COVID-19 pandemic. Much of the discourse on Africa's response captured in scientific journals revolves around nations, public health agencies and organizations, but little is documented about how individual healthcare facilities have fared. This article reports the challenges faced in a tertiary hospital in Nigeria, including space constraints, diagnostic challenges, shortages in personal protective equipment and health worker infections. The opportunities and strengths that aided the response are also highlighted. The lessons learned will be useful to similar facilities. More information about health facility response at various levels is needed to comprehensively assess Africa's response to the pandemic.


Asunto(s)
COVID-19 , Pandemias , Humanos , Nigeria/epidemiología , Pandemias/prevención & control , SARS-CoV-2 , Centros de Atención Terciaria
15.
Am J Trop Med Hyg ; 104(3): 1034-1040, 2021 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-33534753

RESUMEN

COVID-19 in healthcare workers (HCWs) can result in nosocomial transmission, depletion in available workforce, and enhanced community transmission. This article describes surveillance for COVID-19 in HCWs at a tertiary healthcare facility, and documents the outcomes. A descriptive cross-sectional study of all HCWs identified from surveillance for COVID-19 from March 31 to August 31, 2020 was conducted. Healthcare workers were categorized as high risk and low risk using an adapted WHO Risk Assessment tool. Nasopharyngeal and oropharyngeal swab specimens obtained from high-risk subjects were tested by a reverse transcriptase PCR method. Data were analyzed with IBM SPSS version 25.0 software (IBM SPSS Statistics for Windows, Version 25.0, Armonk, NY), and results were presented as frequencies and percentages. The level of significance was set at P < 0.05. During 5 months of surveillance, 1,466 HCWs with a mean age of 38.1 ± 9.7 years were identified as contacts. On risk assessment, 328 (22.4%) were adjudged high risk. High risk was associated with increasing age (P < 0.001), male gender (P = 0.001), and nonclinical staff (P = 0.002). Following testing, 78 (5.3%) in the high-risk category were confirmed to have COVID-19. There was no record of COVID-19 in HCWs adjudged low risk. Forty-four (56.4%) cases were epidemiologically linked to the community, 20 (25.7%) to patients, and 14 (17.9%) to another HCW. Surveillance and risk assessment are crucial to COVID-19 response in healthcare facilities and revealed HCW infections with predominantly nonoccupational epidemiological links in this study.


Asunto(s)
COVID-19/epidemiología , Monitoreo Epidemiológico , Personal de Salud/estadística & datos numéricos , Centros de Atención Terciaria/estadística & datos numéricos , Adulto , COVID-19/prevención & control , COVID-19/transmisión , Estudios Transversales , Femenino , Humanos , Control de Infecciones , Masculino , Persona de Mediana Edad , Nigeria/epidemiología , Medición de Riesgo/métodos , Medición de Riesgo/estadística & datos numéricos , Adulto Joven
16.
Mycoses ; 62(1): 16-21, 2019 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-30184285

RESUMEN

The discipline of medical mycology has become increasingly relevant in the face of the rising incidence of invasive fungal infections (IFI), which pose diagnostic and therapeutic challenges for contemporary medical practice. While firmly established in developed countries, medical mycology remains obscure in many low- and middle-income countries (LMICs). With a teeming vulnerable populace and an incidence rate of 11.8%, Nigeria has one of the highest estimated burdens of invasive fungal infections (IFIs) in the world. Regardless, the scourge of IFIs has remained silent due to a combination of factors principal amongst which are a lack of awareness and dearth in personnel skilled in diagnosis. The present narrative examines the status of medical mycology practice in Nigeria and chronicles the journey to change the status quo spurred by the Leading International Fungal Education (LIFE)-facilitated burden estimate paper and culminating in the birth of the Medical Mycology Society of Nigeria (MMSN), the pioneer national medical mycology society in Africa. The prospects of tackling the IFI challenge are highlighted from the perspective of the nascent society.


Asunto(s)
Pruebas Diagnósticas de Rutina/métodos , Transmisión de Enfermedad Infecciosa/prevención & control , Control de Infecciones/métodos , Infecciones Fúngicas Invasoras/diagnóstico , Infecciones Fúngicas Invasoras/epidemiología , Técnicas Microbiológicas/métodos , Sociedades Científicas , Países en Desarrollo , Humanos , Incidencia , Control de Infecciones/organización & administración , Infecciones Fúngicas Invasoras/prevención & control , Nigeria/epidemiología
17.
PLoS One ; 13(5): e0196224, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29742119

RESUMEN

OBJECTIVES: Disseminated histoplasmosis is an AIDS-defining illness. Histoplasmosis is commonly misdiagnosed as tuberculosis. Nigeria has the second highest number of people living with HIV/AIDS in Africa. The present study was carried out to investigate the prevalence of skin sensitivity amongst Nigerians to histoplasmin. DESIGN: A cross-sectional study was conducted in six centres across five geopolitical zones of Nigeria. METHODS: We recruited both healthy non-HIV and HIV-positive adults with CD4 count ≥ 350 cells/mm3 regardless of their ART status from March to May 2017. Skin tests were performed intradermally; induration ≥5 mm were considered to be histoplasmin positive. RESULTS: 750 participants were recruited from Lagos (n = 52), Yola (n = 156), Ilorin (n = 125), Calabar (n = 120), Ibadan (n = 202) and Benin (n = 95). 467 (62.3%) were HIV negative, 247 (32.9%) were HIV positive and 36 (4.8%) did not know their HIV status. A total of 32/735 (4.4%) participants had a positive skin test. Study centre (p<0.001), education (p = 0.002) and age (p = 0.005) appeared to be significantly associated with positive skin reactivity at the 0.5% significance level, while sex (p = 0.031) and occupation (p = 0.031) would have been significant at the 5% significance level. Males had a higher rate of reactivity than females (p = 0.031, 7% vs 3%). The highest positive rates were recorded from Benin City (13/86 (15%)) and Calabar (7/120 (6%)) and no positives were recorded in Lagos (p<0.001). HIV status was not statistically significant (p = 0.70). CONCLUSION: Histoplasmosis diagnostics should be included in the Nigerian HIV guidelines. Epidemiological vigilance of progressive disseminated histoplasmosis should be considered by local health authorities.


Asunto(s)
Histoplasmina/análisis , Histoplasmosis/diagnóstico , Histoplasmosis/inmunología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Nigeria , Pruebas Cutáneas , Adulto Joven
18.
J Fungi (Basel) ; 3(4)2017 Dec 08.
Artículo en Inglés | MEDLINE | ID: mdl-29371583

RESUMEN

Oropharyngeal candidiasis, a common fungal infection in people living with HIV/AIDS (PLWHA), arises from Candida species colonizing the oral cavity. Fluconazole is the preferred treatment and is often used empirically. Few studies have investigated the prevalence of fluconazole resistance in Nigeria. This study aimed at determining the burden of fluconazole resistance among Candida species in the oral cavities of PLWHA. We sampled the oral cavities of 350 HIV-infected adults and an equal number of HIV-negative controls. Candida isolates were identified using germ tube tests, CHROMagar Candida (CHROMagar, Paris, France), and API Candida yeast identification system (BioMérieux, Marcy-l'Étoile, France). Fluconazole susceptibility was determined using the Clinical and Laboratory Standards Institute disc diffusion method. Data were analysed using SPSS version 21 (IBM, New York, NY, USA). The significance level was set at p ≤ 0.05. The isolation rates for Candida amongst HIV-infected subjects and controls were 20.6% and 3.4%, respectively (p < 0.001). In PLWHA, Candida albicans was most frequently isolated (81.3%) and fluconazole resistance was present in 18 (24%) of the 75 Candida isolates. Resistance to fluconazole was present in half of the non-albicans Candida isolates. Fluconazole resistance is prevalent among oral Candida isolates in PLWHA in the study area with a significantly higher rate among non-albicans Candida spp.

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