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1.
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
2.
Med Mycol ; 62(6)2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38935910

RESUMEN

This systematic review evaluates the current global impact of invasive infections caused by Pneumocystis jirovecii (principally pneumonia: PJP), and was carried out to inform the World Health Organization Fungal Priority Pathogens List. PubMed and Web of Science were used to find studies reporting mortality, inpatient care, complications/sequelae, antifungal susceptibility/resistance, preventability, annual incidence, global distribution, and emergence in the past 10 years, published from January 2011 to February 2021. Reported mortality is highly variable, depending on the patient population: In studies of persons with HIV, mortality was reported at 5%-30%, while in studies of persons without HIV, mortality ranged from 4% to 76%. Risk factors for disease principally include immunosuppression from HIV, but other types of immunosuppression are increasingly recognised, including solid organ and haematopoietic stem cell transplantation, autoimmune and inflammatory disease, and chemotherapy for cancer. Although prophylaxis is available and generally effective, burdensome side effects may lead to discontinuation. After a period of decline associated with improvement in access to HIV treatment, new risk groups of immunosuppressed patients with PJP are increasingly identified, including solid organ transplant patients.


Asunto(s)
Huésped Inmunocomprometido , Infecciones Fúngicas Invasoras , Pneumocystis carinii , Organización Mundial de la Salud , Humanos , Infecciones Fúngicas Invasoras/epidemiología , Infecciones Fúngicas Invasoras/prevención & control , Infecciones Fúngicas Invasoras/mortalidad , Infecciones Fúngicas Invasoras/microbiología , Factores de Riesgo , Salud Global , Neumonía por Pneumocystis/microbiología , Neumonía por Pneumocystis/epidemiología , Neumonía por Pneumocystis/mortalidad , Antifúngicos/uso terapéutico , Incidencia
3.
Med Mycol ; 62(6)2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38935904

RESUMEN

The World Health Organization, in response to the growing burden of fungal disease, established a process to develop a fungal priority pathogens list. This systematic review aimed to evaluate the epidemiology and impact of eumycetoma. PubMed and Web of Science were searched to identify studies published between 1 January 2011 and 19 February 2021. Studies reporting on mortality, inpatient care, complications and sequelae, antifungal susceptibility, risk factors, preventability, annual incidence, global distribution, and emergence during the study time frames were selected. Overall, 14 studies were eligible for inclusion. Morbidity was frequent with moderate to severe impairment of quality of life in 60.3%, amputation in up to 38.5%, and recurrent or long-term disease in 31.8%-73.5% of patients. Potential risk factors included male gender (56.6%-79.6%), younger age (11-30 years; 64%), and farming occupation (62.1%-69.7%). Mycetoma was predominantly reported in Sudan, particularly in central Sudan (37%-76.6% of cases). An annual incidence of 0.1/100 000 persons and 0.32/100 000 persons/decade was reported in the Philippines and Uganda, respectively. In Uganda, a decline in incidence from 3.37 to 0.32/100 000 persons between two consecutive 10-year periods (2000-2009 and 2010-2019) was detected. A community-based, multi-pronged prevention programme was associated with a reduction in amputation rates from 62.8% to 11.9%. With the pre-specified criteria, no studies of antifungal drug susceptibility, mortality, and hospital lengths of stay were identified. Future research should include larger cohort studies, greater drug susceptibility testing, and global surveillance to develop evidence-based treatment guidelines and to determine more accurately the incidence and trends over time.


Asunto(s)
Antifúngicos , Micetoma , Organización Mundial de la Salud , Humanos , Micetoma/epidemiología , Micetoma/microbiología , Incidencia , Antifúngicos/uso terapéutico , Factores de Riesgo , Masculino , Femenino , Calidad de Vida
4.
Med Mycol ; 62(6)2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38935906

RESUMEN

Candida albicans is a common fungal pathogen and amongst the leading causes of invasive candidiasis globally. This systematic review examines the characteristics and global impact of invasive infections caused by C. albicans. We searched on PubMed and Web of Science for studies reporting on criteria such as mortality, morbidity, drug resistance, preventability, yearly incidence, and distribution/emergence during the period from 2016 to 2021. Our findings indicate that C. albicans is the most common Candida species causing invasive disease and that standard infection control measures are the primary means of prevention. However, we found high rates of mortality associated with infections caused by C. albicans. Furthermore, there is a lack of data on complications and sequelae. Resistance to commonly used antifungals remains rare. Although, whilst generally susceptible to azoles, we found some evidence of increasing resistance, particularly in middle-income settings-notably, data from low-income settings were limited. Candida albicans remains susceptible to echinocandins, amphotericin B, and flucytosine. We observed evidence of a decreasing proportion of infections caused by C. albicans relative to other Candida species, although detailed epidemiological studies are needed to confirm this trend. More robust data on attributable mortality, complications, and sequelae are needed to understand the full extent of the impact of invasive C. albicans infections.


Asunto(s)
Antifúngicos , Candida albicans , Farmacorresistencia Fúngica , Humanos , Candida albicans/efectos de los fármacos , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Organización Mundial de la Salud , Candidiasis/epidemiología , Candidiasis/microbiología , Candidiasis/mortalidad , Candidiasis Invasiva/epidemiología , Candidiasis Invasiva/microbiología , Candidiasis Invasiva/mortalidad , Salud Global , Incidencia
5.
Med Mycol ; 62(6)2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38935903

RESUMEN

Histoplasmosis, a significant mycosis primarily prevalent in Africa, North and South America, with emerging reports globally, poses notable health challenges, particularly in immunocompromised individuals such as people living with HIV/AIDS and organ transplant recipients. This systematic review, aimed at informing the World Health Organization's Fungal Priority Pathogens List, critically examines literature from 2011 to 2021 using PubMed and Web of Science, focusing on the incidence, mortality, morbidity, antifungal resistance, preventability, and distribution of Histoplasma. We also found a high prevalence (22%-44%) in people living with HIV, with mortality rates ranging from 21% to 53%. Despite limited data, the prevalence of histoplasmosis seems stable, with lower estimates in Europe. Complications such as central nervous system disease, pulmonary issues, and lymphoedema due to granuloma or sclerosis are noted, though their burden remains uncertain. Antifungal susceptibility varies, particularly against fluconazole (MIC: ≥32 mg/l) and caspofungin (MICs: 4-32 mg/l), while resistance to amphotericin B (MIC: 0.125-0.16 mg/l), itraconazole (MICs: 0.004-0.125 mg/l), and voriconazole (MICs: 0.004-0.125 mg/l) remains low. This review identifies critical knowledge gaps, underlining the need for robust, globally representative surveillance systems to better understand and combat this fungal threat.


Asunto(s)
Antifúngicos , Farmacorresistencia Fúngica , Histoplasma , Histoplasmosis , Organización Mundial de la Salud , Humanos , Histoplasmosis/epidemiología , Histoplasmosis/microbiología , Histoplasmosis/tratamiento farmacológico , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Histoplasma/efectos de los fármacos , Histoplasma/aislamiento & purificación , Prevalencia , Huésped Inmunocomprometido
6.
Med Mycol ; 62(6)2024 Jun 27.
Artículo en Inglés | MEDLINE | ID: mdl-38935914

RESUMEN

Recognizing the growing global burden of fungal infections, the World Health Organization established a process to develop a priority list of fungal pathogens (FPPL). In this systematic review, we aimed to evaluate the epidemiology and impact of infections caused by Fusarium spp., Scedosporium spp., and Lomentospora prolificans to inform the first FPPL. PubMed and Web of Sciences databases were searched to identify studies published between January 1, 2011 and February 23, 2021, reporting on mortality, complications and sequelae, antifungal susceptibility, preventability, annual incidence, and trends. Overall, 20, 11, and 9 articles were included for Fusarium spp., Scedosporium spp., and L. prolificans, respectively. Mortality rates were high in those with invasive fusariosis, scedosporiosis, and lomentosporiosis (42.9%-66.7%, 42.4%-46.9%, and 50.0%-71.4%, respectively). Antifungal susceptibility data, based on small isolate numbers, showed high minimum inhibitory concentrations (MIC)/minimum effective concentrations for most currently available antifungal agents. The median/mode MIC for itraconazole and isavuconazole were ≥16 mg/l for all three pathogens. Based on limited data, these fungi are emerging. Invasive fusariosis increased from 0.08 cases/100 000 admissions to 0.22 cases/100 000 admissions over the time periods of 2000-2009 and 2010-2015, respectively, and in lung transplant recipients, Scedosporium spp. and L. prolificans were only detected from 2014 onwards. Global surveillance to better delineate antifungal susceptibility, risk factors, sequelae, and outcomes is required.


Asunto(s)
Antifúngicos , Fusarium , Pruebas de Sensibilidad Microbiana , Scedosporium , Humanos , Antifúngicos/farmacología , Antifúngicos/uso terapéutico , Fusarium/efectos de los fármacos , Fusarium/aislamiento & purificación , Scedosporium/efectos de los fármacos , Scedosporium/aislamiento & purificación , Scedosporium/clasificación , Organización Mundial de la Salud , Micosis/epidemiología , Micosis/microbiología , Fusariosis/microbiología , Fusariosis/epidemiología , Ascomicetos/efectos de los fármacos , Infecciones Fúngicas Invasoras
7.
Emerg Infect Dis ; 29(5): 1073-1075, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-37081606

RESUMEN

Melioidosis, caused by the soil-dwelling bacterium Burkholderia pseudomallei, is predicted to be endemic in Nigeria but is only occasionally reported. This report documents the systematic identification of the presence of B. pseudomallei and B. thailandensis in the soil across multiple states in Nigeria.


Asunto(s)
Burkholderia pseudomallei , Melioidosis , Humanos , Burkholderia pseudomallei/genética , Melioidosis/epidemiología , Melioidosis/microbiología , Nigeria/epidemiología , Microbiología del Suelo
8.
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
9.
Niger Postgrad Med J ; 30(2): 132-136, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37148115

RESUMEN

Introduction: Otomycosis is a global disease, common in the world's tropical and subtropical regions. The diagnosis is clinical, but mycological examination is required for its confirmation. There is a paucity of published data on otomycosis particularly the aetiologic agents in Nigeria. This study aims to fill in this gap by assessing the clinical presentations, risk factors and aetiologic agents of otomycosis in our setting. Methods: This was a prospective study of 126 clinically diagnosed patients and 30 controls. Mycological analysis of debris and swab samples from their external auditory canal was carried out. Results: One hundred and twenty-six patients were recruited, with 162 ear samples collected. There was mycological confirmation of otomycosis in 100 (79.4%) patients (subjects) and 127 (78.4%) specimens. The subjects' age range was 1-80 years, 30.89 ± 21.15 mean age, and 29-year median age. The peak prevalent age of 1-10 years was statistically significant, P = 0.022. The common symptoms in the subjects were itching 86 (86%), ear blockage 84 (84%) and otalgia 73 (73%). Regular ear cleaning 67 (67.0%) was the most common risk factor. Noted aetiologic agents were Aspergillus species 81 (63.8%), Candida species 42 (33.1%) and Yeast 4 (3.1%). Aspergillus flavus (40/127; 31.5%) was the most common fungus isolated. Unilateral otomycosis 73 (73%) was more common than bilateral otomycosis 27 (27%). Conclusion: Otomycosis is common in all ages, and is a commonly unilateral disease. Regular ear cleaning is the most common risk factor. A. flavus was the most common aetiologic agent in this study.


Asunto(s)
Otomicosis , Humanos , Lactante , Preescolar , Niño , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Otomicosis/epidemiología , Otomicosis/diagnóstico , Otomicosis/microbiología , Nigeria/epidemiología , Estudios Prospectivos , Candida , Factores de Riesgo
10.
Niger Postgrad Med J ; 30(1): 12-17, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36814158

RESUMEN

Introduction: Histoplasmosis commonly occurs in the advanced HIV disease population and also in immunocompetent individuals. Previous reviews and recent studies highlight several cases of histoplasmosis reported in Nigeria. We aimed to describe the current epidemiology of histoplasmosis in Nigeria and the need for active surveillance in the at-risk populations. Methods: Literature searches for all publications on histoplasmosis in Nigeria were performed using online databases including Google scholar, PubMed and African Journal online. The following search terms: 'histoplasmosis' and 'Nigeria', AND/OR 'Histoplasma and Nigeria' were used. No limitations on the date or other search criteria were applied, to avoid the exclusion of articles on histoplasmosis in Nigeria. All publications on histoplasmosis outside Nigeria were excluded. Results: Our review identified a total of 231 cases of histoplasmosis reported from Nigeria: 128 were from individual case reports and case series while 103 were cases from two observational studies. Of the 231 cases, 97 (42.0%) were from South West Nigeria, 66 (28.6%) were from South-South Nigeria, 24 (10.4%) were from North West, 22 (9.5%) from North Central Nigeria, 17 (7.4%) from South East Nigeria and 5 (2.2%) from the North East. Based on Nigeria's current population size of 216,953,585 the burden of histoplasmosis per 100,000 inhabitants was estimated to be 0.1%. The sheer number of cases detected in recent observational studies compared with individual case reports and series reported over a longer duration of 6 decades suggests gross under-reporting of histoplasmosis in Nigeria. Conclusion: Histoplasmosis is not an uncommon clinical entity in Nigeria. Histoplasmosis case finding should be improved by training and retraining healthcare professionals and providing much-needed diagnostic capacity and infrastructure across health facilities in Nigeria.


Asunto(s)
Infecciones por VIH , Histoplasmosis , Humanos , Nigeria , Histoplasmosis/diagnóstico , Histoplasmosis/epidemiología , Histoplasma , Factores de Riesgo
11.
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
12.
Med Mycol ; 60(8)2022 Aug 22.
Artículo en Inglés | MEDLINE | ID: mdl-35906879

RESUMEN

Emergence of triazole resistance has been observed in Aspergillus fumigatus over the past decade including Africa. This review summarizes the current published data on the epidemiology and reported mechanisms of triazole-resistant Aspergillus fumigatus (TRAF) in both environmental and clinical isolates from Africa. Searches on databases Medline, PubMed, HINARI, Science Direct, Scopus and Google Scholar on triazole resistance published between 2000 and 2021 from Africa were performed. Isolate source, antifungal susceptibility using internationally recognized methods, cyp51A mechanism of resistance and genotype were collected. Eleven published African studies were found that fitted the search criteria; these were subsequently analyzed. In total this constituted of 1686 environmental and 46 clinical samples. A TRAF prevalence of 17.1% (66/387) and 1.3% (5/387) was found in respectively environmental and clinical settings in African studies. Resistant to itraconazole, voriconazole, and posaconazole was documented. Most of the triazole-resistant isolates (30/71, 42.25%) were found to possess the TR34/L98H mutation in the cyp51A-gene; fewer with TR46/Y121F/T289A (n = 8), F46Y/M172V/E427K (n = 1), G54E (n = 13), and M172V (n = 1) mutations. African isolates with the TR34/L98H, TR46/Y121F/T289A and the G54E mutations were closely related and could be grouped in one of two clusters (cluster-B), whereas the cyp51A-M172V mutation clustered with most cyp51A-WT strains (cluster-A). A single case from Kenya shows that TR34/L98H from environmental and clinical isolates are closely related. Our findings highlight that triazole resistance in environmental and clinical A. fumigatus is a cause for concern in a number of African countries. There is need for epidemiological surveillance to determine the true burden of the problem in Africa. LAY SUMMARY: Emergence of triazole resistance has been observed in Aspergillus fumigatus. TRAF was found from environmental (17.1%) and clinical (1.3%) settings in Africa. We highlighted that triazole resistance in environmental and clinical A. fumigatus is a cause for concern in a number of African countries.


Asunto(s)
Aspergillus fumigatus , Farmacorresistencia Fúngica , Animales , Antifúngicos/farmacología , Azoles , Farmacorresistencia Fúngica/genética , Proteínas Fúngicas/genética , Pruebas de Sensibilidad Microbiana/veterinaria , Triazoles/farmacología
13.
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
14.
Med Mycol ; 58(8): 1015-1028, 2020 Nov 10.
Artículo en Inglés | MEDLINE | ID: mdl-32400869

RESUMEN

Pneumocystis jirovecii can cause life-threatening pneumonia in immunocompromised patients. Traditional diagnostic testing has relied on staining and direct visualization of the life-forms in bronchoalveolar lavage fluid. This method has proven insensitive, and invasive procedures may be needed to obtain adequate samples. Molecular methods of detection such as polymerase chain reaction (PCR), loop-mediated isothermal amplification (LAMP), and antibody-antigen assays have been developed in an effort to solve these problems. These techniques are very sensitive and have the potential to detect Pneumocystis life-forms in noninvasive samples such as sputum, oral washes, nasopharyngeal aspirates, and serum. This review evaluates 100 studies that compare use of various diagnostic tests for Pneumocystis jirovecii pneumonia (PCP) in patient samples. Novel diagnostic methods have been widely used in the research setting but have faced barriers to clinical implementation including: interpretation of low fungal burdens, standardization of techniques, integration into resource-poor settings, poor understanding of the impact of host factors, geographic variations in the organism, heterogeneity of studies, and limited clinician recognition of PCP. Addressing these barriers will require identification of phenotypes that progress to PCP and diagnostic cut-offs for colonization, generation of life-form specific markers, comparison of commercial PCR assays, investigation of cost-effective point of care options, evaluation of host factors such as HIV status that may impact diagnosis, and identification of markers of genetic diversity that may be useful in diagnostic panels. Performing high-quality studies and educating physicians will be crucial to improve the rates of diagnosis of PCP and ultimately to improve patient outcomes.


Asunto(s)
Técnicas Microbiológicas/métodos , Pneumocystis carinii/aislamiento & purificación , Neumonía por Pneumocystis/diagnóstico , Humanos , Inmunoensayo , Huésped Inmunocomprometido , Técnicas Microbiológicas/economía , Técnicas Microbiológicas/normas , Técnicas Microbiológicas/tendencias , Pneumocystis carinii/citología , Pneumocystis carinii/fisiología , Neumonía por Pneumocystis/epidemiología , Neumonía por Pneumocystis/prevención & control , Reacción en Cadena de la Polimerasa , Sensibilidad y Especificidad , Manejo de Especímenes , Coloración y Etiquetado
15.
Mycoses ; 63(3): 244-249, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31829454

RESUMEN

Most African countries have poorly funded and overburdened health systems. Additionally, a high prevalence of HIV in Sub-Saharan Africa contributes to a high burden of opportunistic fungal infections. Data generated by GAFFI from 15 of 57 African countries revealed that an estimated 47 million Africans suffer from fungal diseases, of whom an estimated 1.7 million suffer from a serious fungal infection annually. Almost all African countries lack a surveillance system for fungal infections with the exception of South Africa. South Africa is also the only African country with a national mycology reference laboratory. Across the continent, there is a pervasive picture of inadequate/poor diagnostic capacity, low level of awareness among healthcare workers and policymakers and unavailability and non-accessibility to essential antifungal medications. Recent outreach efforts by the International Society for Human and Animal Mycology (ISHAM) and the European Confederation of Medical Mycology (ECMM) have aimed to increase involvement of African countries and experts in global initiatives such as "One World One Guideline" and also the ECMM Academy. Recently, under the auspices of ISHAM, the African sub-region created a network of mycology experts whose goal is to organise and engage African leaders in the field of medical mycology. The aim of this ISHAM Working Group was to facilitate interaction and synergy among regional leaders in order to develop educational programmes for capacity building to aid in the diagnosis and care of patients with fungal infections in Africa. The working group will also encourage country initiatives to develop clinical guidelines, to support surveys and to support the establishment of reference mycology laboratories.


Asunto(s)
Infecciones Oportunistas Relacionadas con el SIDA/epidemiología , Micosis/epidemiología , Vigilancia de la Población/métodos , África/epidemiología , Enfermedades Endémicas/clasificación , Enfermedades Endémicas/estadística & datos numéricos , Personal de Salud/educación , Humanos , Colaboración Intersectorial , Bases del Conocimiento , Enfermedades Desatendidas/epidemiología
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.
Emerg Infect Dis ; 24(8)2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-30016256

RESUMEN

Chronic pulmonary aspergillosis (CPA) is a recognized complication of pulmonary tuberculosis (TB). In 2015, the World Health Organization reported 2.2 million new cases of nonbacteriologically confirmed pulmonary TB; some of these patients probably had undiagnosed CPA. In October 2016, the Global Action Fund for Fungal Infections convened an international expert panel to develop a case definition of CPA for resource-constrained settings. This panel defined CPA as illness for >3 months and all of the following: 1) weight loss, persistent cough, and/or hemoptysis; 2) chest images showing progressive cavitary infiltrates and/or a fungal ball and/or pericavitary fibrosis or infiltrates or pleural thickening; and 3) a positive Aspergillus IgG assay result or other evidence of Aspergillus infection. The proposed definition will facilitate advancements in research, practice, and policy in lower- and middle-income countries as well as in resource-constrained settings.


Asunto(s)
Aspergilosis Pulmonar/diagnóstico , Aspergilosis Pulmonar/patología , Enfermedad Crónica , Países en Desarrollo , Humanos , Guías de Práctica Clínica como Asunto , Aspergilosis Pulmonar/microbiología , Factores Socioeconómicos
18.
Mycoses ; 61(5): 290-297, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-29377368

RESUMEN

Fluconazole is the most commonly used antifungal agent for both the treatment of cryptococcal meningitis, and for prophylaxis against the disease. However, its prolonged use has the potential to exert selection pressure in favour of fluconazole-resistant strains. We evaluated the prevalence of fluconazole resistance in Cryptococcus spp. clinical isolates in 29 studies from 1988 to May 2017 included in EMBASE and MEDLINE databases. A total of 4995 Cryptococcus isolates from 3210 patients constituted this study; 248 (5.0%) of the isolates from relapsed episodes of cryptococcosis were included in this analysis. Eleven (38%) of the studies used minimum inhibitory concentrations (MICs) breakpoints of ≥64 µg/mL to define fluconazole resistance, 6 (21%) used ≥32 µg/mL, 11 (38%) used ≥16 µg/mL and 1 (3%) used ≤20 µg/mL. Overall, mean prevalence of fluconazole resistance was 12.1% (95% confidence interval [CI]: 6.7-17.6) for all isolates (n = 4995). Mean fluconazole resistance was 10.6% (95% CI: 5.5-15.6) for the incident isolates (n = 4747) and 24.1% (95% CI: -3.1-51.2) for the relapse isolates (n = 248). Of the 4995 isolates, 936 (18.7%) had MICs above the ecological cut-off value. Fluconazole resistance appears to be an issue in Cryptococcus isolates from patients with relapses. It remains unclear whether relapses occur due to resistance or other factors. There is an urgent need to establish antifungal breakpoints for Cryptococcus spp.


Asunto(s)
Antifúngicos/farmacología , Criptococosis/microbiología , Cryptococcus neoformans/efectos de los fármacos , Farmacorresistencia Fúngica , Fluconazol/farmacología , Infecciones Oportunistas Relacionadas con el SIDA/complicaciones , Infecciones Oportunistas Relacionadas con el SIDA/microbiología , Antifúngicos/uso terapéutico , Criptococosis/tratamiento farmacológico , Criptococosis/prevención & control , Cryptococcus neoformans/aislamiento & purificación , Fluconazol/uso terapéutico , Humanos , Meningitis Criptocócica/tratamiento farmacológico , Meningitis Criptocócica/microbiología , Pruebas de Sensibilidad Microbiana , Prevalencia , Recurrencia
20.
Niger Postgrad Med J ; 24(3): 150-154, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29082903

RESUMEN

BACKGROUND: Invasive candidiasis has been identified globally as a major cause of morbidity and mortality in neonatal intensive care units (NICU). Systemic candidiasis presents like bacterial sepsis and can involve multiple organs. OBJECTIVE: The objective of this study was to determine the prevalence of Candida infection in a NICU at a tertiary hospital in Nigeria and to identify its associated risk factors. MATERIALS AND METHODS: The study was a retrospective descriptive study of all cases of culture-proven invasive Candida infection (ICI) in neonates admitted to the NICU over a 4-year period. The study participants were identified from microbiology records of all neonates with a positive Candida culture. Medical records of identified neonates were also reviewed, and relevant information obtained. RESULTS: Over the 4 years, 2712 newborns were admitted to the NICU. From these, 1182 various clinical samples were collected from babies with features of sepsis and processed in the medical microbiology laboratory. Twenty-seven (2.3%) of the cultures yielded Candida organisms; fifteen of the Candida cultures were from male infants with a male:female ratio of 1.3:1. Bloodstream infection was the most frequent ICI seen in preterm babies (seven [58.3%] out of 12 babies with ICI). Nearly, all (91.7%) affected preterm infants with ICI were <1500 g in weight. All were exposed to invasive procedures and broad-spectrum antibiotics. The case fatality rate among those with ICI was 18.5%. CONCLUSION: There was a significant prevalence of invasive candidiasis in high-risk newborns and the incidence increases with increased practices in risk factors such as invasive procedures and antibiotic use and lower gestational age babies with very low birth weight.


Asunto(s)
Candida/aislamiento & purificación , Candidiasis Invasiva/epidemiología , Unidades de Cuidado Intensivo Neonatal , Candidemia/epidemiología , Candidiasis Invasiva/diagnóstico , Candidiasis Invasiva/microbiología , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Nigeria/epidemiología , Prevalencia , Estudios Retrospectivos , Factores de Riesgo , Distribución por Sexo
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