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1.
Commun Biol ; 7(1): 524, 2024 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-38702419

RESUMEN

A large proportion of HIV-coinfected visceral leishmaniasis (VL-HIV) patients exhibit chronic disease with frequent VL recurrence. However, knowledge on immunological determinants underlying the disease course is scarce. We longitudinally profiled the circulatory cellular immunity of an Ethiopian HIV cohort that included VL developers. We show that chronic VL-HIV patients exhibit high and persistent levels of TIGIT and PD-1 on CD8+/CD8- T cells, in addition to a lower frequency of IFN-γ+ TIGIT- CD8+/CD8- T cells, suggestive of impaired T cell functionality. At single T cell transcriptome and clonal resolution, the patients show CD4+ T cell anergy, characterised by a lack of T cell activation and lymphoproliferative response. These findings suggest that PD-1 and TIGIT play a pivotal role in VL-HIV chronicity, and may be further explored for patient risk stratification. Our findings provide a strong rationale for adjunctive immunotherapy for the treatment of chronic VL-HIV patients to break the recurrent disease cycle.


Asunto(s)
Coinfección , Infecciones por VIH , Leishmaniasis Visceral , Humanos , Leishmaniasis Visceral/inmunología , Leishmaniasis Visceral/complicaciones , Leishmaniasis Visceral/parasitología , Infecciones por VIH/inmunología , Infecciones por VIH/complicaciones , Coinfección/inmunología , Masculino , Adulto , Femenino , Linfocitos T CD8-positivos/inmunología , Persona de Mediana Edad , Enfermedad Crónica , Linfocitos T CD4-Positivos/inmunología , Etiopía
2.
Clin Infect Dis ; 2024 Jan 09.
Artículo en Inglés | MEDLINE | ID: mdl-38193647

RESUMEN

BACKGROUND: HIV patients with recurrent visceral leishmaniasis (VL) could potentially drive Leishmania transmission in areas with anthroponotic transmission such as East-Africa, but studies are lacking. Leishmania parasitemia has been used as proxy for infectiousness. METHODS: This study is nested within the PreLeish prospective cohort study, following a total of 490 HIV infected individuals free of VL at enrollment for upto 24-37 months in North-West Ethiopia. Blood Leishmania PCR was done systematically. This case series reports on ten HIV-coinfected individuals with chronic VL (≥3 VL episodes during follow-up) for upto 37 months, and three individuals with asymptomatic Leishmania infection for upto 24 months. RESULTS: All ten chronic VL cases were male, on antiretroviral treatment, with 0-11 relapses before enrollment. Median baseline CD4 counts were 82 cells/µL. They displayed three to six VL treatment episodes over a period upto 37 months. Leishmania blood PCR levels were strongly positive for almost the entire follow-up time (median Ct value 26 (IQR 23-30), including during periods between VL treatment. Additionally, we describe three HIV-infected individuals with asymptomatic Leishmania infection and without VL history, with equally strong Leishmania parasitemia over a period of upto 24 months without developing VL. All were on antiretroviral treatment at enrollment, with baseline CD4 counts ranging from 78 to 350 cells/µL. CONCLUSION: These are the first data on chronic parasitemia in HIV-infected individuals from L donovani endemic areas. HIV patients with asymptomatic and symptomatic Leishmania infection could potentially be highly infectious and constitute Leishmania superspreaders. Xenodiagnosis studies are required to confirm infectiousness.

3.
Lancet Infect Dis ; 24(1): e36-e46, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37640031

RESUMEN

For the past 15 years, trials of combination therapy options for visceral leishmaniasis have been conducted with the aim of identifying effective, and safe treatment regimens that were shorter than existing monotherapy regimens and could also prevent or delay the emergence of drug resistance. Although first-line treatment currently relies on combination therapy in east Africa, this is not true in Latin America owing to disappointing trial results, with lower than expected efficacy seen for the combination treatment group. By contrast, several effective combination therapy regimens have been identified through trials on the Indian subcontinent; yet, first-line therapy is still AmBisome monotherapy as the drug is part of a free donation programme and is highly effective in this region. Achieving a short all-oral combination treatment will require new chemical entities, several of which are currently under evaluation. Future studies should systematically include pharmacological substudies to ensure optimal dosing for all patient groups. To achieve maximal impact of new combination treatments, mechanisms to ensure drug availability and access after trials should be established. Enhancing the longevity of current and novel treatments will require effective systems for early detection of emerging drug resistance.


Asunto(s)
Antiprotozoarios , Leishmaniasis Visceral , Humanos , Leishmaniasis Visceral/tratamiento farmacológico , Antiprotozoarios/uso terapéutico , Quimioterapia Combinada , Fosforilcolina/uso terapéutico , Terapia Combinada
5.
Lancet Infect Dis ; 23(3): e108-e114, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36400065

RESUMEN

A clear understanding of the accuracy of diagnostic tests is essential for the management of infections such as visceral leishmaniasis in endemic areas. Using both published and unpublished datasets from field diagnostic trials of visceral leishmaniasis in the past ten years, we show the potential effects of unrecognised sources of bias including work-up bias, referral bias, and reference test bias on the results. We outline why these biases, which can occur in diagnostic studies of any disease, can go unrecognised despite adherence to current STARD and QUADAS-2 guidelines. Using these examples and referring to others seen in studies of bacterial and viral infections, we make specific recommendations on how these biases might be avoided through specific steps in study design, study reporting, and the locations where studies are conducted.


Asunto(s)
Leishmaniasis Visceral , Humanos , Sesgo , África Oriental
6.
J Glob Antimicrob Resist ; 32: 167-175, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36470362

RESUMEN

OBJECTIVES: In this study, we assessed the genetic diversity and gene mutations that confer resistance to rifampicin (RIF), isoniazid (INH), fluoroquinolone (FQ), and second-line injectable (SLI) drugs in RIF-resistant (RR)/multidrug-resistant tuberculosis (MDR-TB) isolates in Northwest Ethiopia. METHODS: Spoligotyping was used to assign isolates to TB lineages (Ls), and Hain line probe assays were used to detect resistance to RIF, INH, and FQs, and SLIs. RESULTS: Among 130 analyzed strains, 68.5% were RR, and four major Mycobacterium tuberculosis complex lineages (L1, L3, L4, and L7) were identified with a predominance of the Euro-American L4 (72, 54.7%), while L7 genotypes were less common (3, 2.3%). Overall, the L4-T3-ETH (41, 32.0%), L3-CAS1-Delhi (29, 22.7%), and L3-CAS1-Killi (19, 14.8%) families were most common. Line probe analysis showed that among rpoB mutants, 65.2% were S450L, while 87.8% of katG mutants were S315T. Only three isolates showed mutation (c-15t) at the inhA gene, and no double mutation with katG and inhA genes was found. Six strains, two each of L1, L3, and L4, were resistant to FQs, having gyrA mutations (D94G, S91P), of which three isolates had additional resistance to SLI (rrs A1401G or C1402T mutations) including one isolate with low-level kanamycin (KAN) resistance. CONCLUSIONS: This study showed a predominance of L4-T3-ETH, L3-CAS1-Delhi, and L3-CAS1-Killi families, with a high rate of rpoB_S450L and katG_S315T mutations and a low proportion of gyrA and rrs mutations. L7 was less frequently observed in this study. Further investigations are, therefore, needed to understand L7 and other lineages with undefined mutations.


Asunto(s)
Mycobacterium tuberculosis , Humanos , Antituberculosos/farmacología , Antituberculosos/uso terapéutico , Etiopía , Farmacorresistencia Bacteriana Múltiple/genética , Mutación , Rifampin/farmacología
7.
J Community Health ; 47(4): 704-709, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35587329

RESUMEN

The adherence to the CDC guideline on screening non-U.S. born persons for hepatitis B virus infection was assessed. A retrospective cohort study was conducted at University of Washington primary care clinics using the electronic medical records. Persons from hepatitis B virus prevalent countries were identified using country of origin and language. Of 2329 eligible for screening, only 617 (26.5%) were screened. The prevalence of HBsAg was 35 (5.7%). Among women of reproductive age (18-44 years, n = 906), 238 (26.3%) were screened, and 7 (2.9%) were HBsAg positive. Low screening practice for chronic hepatitis B infection, and high infection prevalence among those screened was noted. The findings indicate that potentially three out of every one detected case may be missed. Urgent efforts are needed to scale up and consistently implement HBV screening at primary care clinics.


Asunto(s)
Hepatitis B Crónica , Hepatitis B , Adolescente , Adulto , Femenino , Hepatitis B/diagnóstico , Hepatitis B/epidemiología , Hepatitis B/prevención & control , Antígenos de Superficie de la Hepatitis B , Virus de la Hepatitis B , Hepatitis B Crónica/diagnóstico , Hepatitis B Crónica/epidemiología , Humanos , Tamizaje Masivo , Prevalencia , Estudios Retrospectivos , Adulto Joven
8.
PLoS One ; 16(6): e0252419, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34101727

RESUMEN

BACKGROUND: Visceral Leishmaniasis (VL) is a neglected tropical disease endemic to several countries including Ethiopia. Outside of Africa, kidney involvement in VL is frequent and associated with increased mortality. There is however limited data on acute kidney injury (AKI) in VL patients in East-Africa, particularly in areas with high rates of HIV co-infection. This study aims to determine the prevalence, characteristics and associated factors of AKI in VL patients in Northwest Ethiopia. METHODS: A hospital based retrospective patient record analysis was conducted including patients treated for VL from January 2019 to December 2019 at the Leishmaniasis Research and Treatment Center (LRTC), Gondar, Ethiopia. Patients that were enrolled in ongoing clinical trials at the study site and those with significant incomplete data were excluded. Data was analyzed using SPSS version 20. P values were considered significant if < 0.05. RESULTS: Among 352 VL patients treated at LRTC during the study period, 298 were included in the study. All were male patients except two; the median age was 23 years (IQR: 20-27). The overall prevalence of AKI among VL patients was 17.4% (confidence interval (CI): 13.6%-22.2%). Pre-renal azotemia (57%) and drug-induced AKI (50%) were the main etiologies of AKI at admission and post-admission respectively. Proteinuria and hematuria occurred in 85% and 42% of AKI patients respectively. Multivariate logistic regression revealed HIV co-infection (adjusted odds ratio (AOR): 6.01 95% CI: 1.99-18.27, p = 0.001) and other concomitant infections (AOR: 3.44 95% CI: 1.37-8.65, p = 0.009) to be independently associated with AKI. CONCLUSION: AKI is a frequent complication in Ethiopian VL patients. Other renal manifestations included proteinuria, hematuria, and pyuria. HIV co-infection and other concomitant infections were significantly associated with AKI. Further studies are needed to quantify proteinuria and evaluate the influence of AKI on the treatment course, morbidity and mortality in VL patients.


Asunto(s)
Leishmaniasis Visceral/fisiopatología , Lesión Renal Aguda/patología , Lesión Renal Aguda/fisiopatología , Adolescente , Adulto , Coinfección/patología , Coinfección/fisiopatología , Etiopía , Infecciones por VIH/patología , Infecciones por VIH/fisiopatología , Humanos , Leishmaniasis/patología , Leishmaniasis/fisiopatología , Leishmaniasis Visceral/patología , Persona de Mediana Edad , Oportunidad Relativa , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven
9.
PLoS Negl Trop Dis ; 15(5): e0009460, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-34048461

RESUMEN

BACKGROUND: Cutaneous leishmaniasis (CL) in Ethiopia, caused by Leishmania aethiopica, is often severe and hard to treat compared to CL caused by other species elsewhere. Miltefosine is the only oral anti-leishmanial drug, with a favorable side-effect profile compared to routinely available sodium stibogluconate (SSG), but evidence about its use for L. aethiopica is lacking. METHODOLOGY AND PRINCIPAL FINDINGS: In an observational cohort study, treatment outcomes, safety and adherence among CL patients who required systemic treatment and received miltefosine for 28 days in Boru Meda Hospital and University of Gondar Hospital were studied. Patient cure was defined as 100% flattening for non-ulcerated lesions and 100% flattening and 100% re-epithelization for ulcerated lesions. Outcomes were documented for day 28, 90 and 180, both per site, and pooled, adjusting for site as a fixed effect with effect coding. Among 94 included patients (32 in Gondar, 62 in Boru Meda), median lesion duration was 12 months, median size six cm, and mucosal involvement (46.8%) and diffuse (30.9%) lesions were common. Adherence to miltefosine was good, and side-effects were tolerable. Initial outcomes at day 28 were promising, with 68.8% and 94.0% of patients having good improvement or cure in Gondar and Boru Meda respectively. In Boru Meda, outcomes were good with 72.7% and 72.9% cure at day 90 and day 180 respectively. In Gondar, results were less promising, with only 12.5% and 26.7% cure at day 90 and day 180, although confidence intervals were wide. In pooled estimates, 48.7% of patients reached cure at day 180, and 32.3% relapsed. Outcomes were better in Boru Meda Hospital, for smaller lesions and for mucosal lesions. CONCLUSIONS/SIGNIFICANCE: Based on miltefosine's good initial response, tolerable side-effects, tablet-form, we propose to include miltefosine for future clinical trials using extended treatment schedules, combination therapy, or targeting specific subgroups. TRIAL REGISTRATION: ClinicalTrials.gov NCT04004754.


Asunto(s)
Antiprotozoarios/uso terapéutico , Leishmaniasis Cutánea/tratamiento farmacológico , Fosforilcolina/análogos & derivados , Administración Oral , Adolescente , Adulto , Antiprotozoarios/administración & dosificación , Antiprotozoarios/efectos adversos , Estudios de Cohortes , Etiopía , Femenino , Humanos , Leishmania/efectos de los fármacos , Masculino , Fosforilcolina/administración & dosificación , Fosforilcolina/efectos adversos , Fosforilcolina/uso terapéutico , Proyectos Piloto , Cumplimiento y Adherencia al Tratamiento/estadística & datos numéricos , Resultado del Tratamiento
10.
Am J Trop Med Hyg ; 104(6): 2082-2084, 2021 04 12.
Artículo en Inglés | MEDLINE | ID: mdl-33844644

RESUMEN

Human visceral leishmaniasis (VL) is a life-threatening disease caused by protozoan parasites belonging to the Leishmania donovani complex. Atypical cases of leishmaniasis and HIV coinfection have been documented in case reports, mostly associated with gastrointestinal tract, kidney, and skin involvement. We report two VL cases with atypical localizations not reported from east Africa before, both diagnosed and treated at the Leishmaniasis Research and Treatment Center, Gondar, Ethiopia. The first case was an HIV-infected patient with scrotal and penile involvement. Leishmania parasites were detected in the spleen and the scrotum. The second case was an immunocompetent individual with esophageal, laryngeal, and pharyngeal involvement and facial lesions. Leishmania parasites were detected in the spleen, skin, and esophageal biopsies. Current evidence suggests atypical presentation can occur in patients irrespective of their HIV status. Therefore, we suggest a high index of suspicion for VL among clinicians working in endemic areas of Ethiopia.


Asunto(s)
Coinfección/diagnóstico , Leishmaniasis Visceral/diagnóstico , Adulto , Antiprotozoarios/uso terapéutico , Biopsia , Coinfección/parasitología , Coinfección/virología , Esófago/parasitología , Esófago/patología , Etiopía , Cara/parasitología , Cara/patología , Humanos , Inmunocompetencia , Laringe/parasitología , Leishmaniasis Visceral/tratamiento farmacológico , Masculino , Faringe/parasitología , Escroto/parasitología , Piel/parasitología , Piel/patología , Bazo/parasitología , Bazo/patología , Resultado del Tratamiento
11.
J Antimicrob Chemother ; 76(5): 1258-1268, 2021 04 13.
Artículo en Inglés | MEDLINE | ID: mdl-33677546

RESUMEN

BACKGROUND: Despite high HIV co-infection prevalence in Ethiopian visceral leishmaniasis (VL) patients, the adequacy of antileishmanial drug exposure in this population and effect of HIV-VL co-morbidity on pharmacokinetics of antileishmanial and antiretroviral (ARV) drugs is still unknown. METHODS: HIV-VL co-infected patients received the recommended liposomal amphotericin B (LAmB) monotherapy (total dose 40 mg/kg over 24 days) or combination therapy of LAmB (total dose 30 mg/kg over 11 days) plus 28 days 100 mg/day miltefosine, with possibility to extend treatment for another cycle. Miltefosine, total amphotericin B and ARV concentrations were determined in dried blood spots or plasma using LC-MS/MS. RESULTS: Median (IQR) amphotericin B Cmax on Day 1 was 24.6 µg/mL (17.0-34.9 µg/mL), which increased to 40.9 (25.4-53.1) and 33.2 (29.0-46.6) µg/mL on the last day of combination and monotherapy, respectively. Day 28 miltefosine concentration was 18.7 (15.4-22.5) µg/mL. Miltefosine exposure correlated with amphotericin B accumulation. ARV concentrations were generally stable during antileishmanial treatment, although efavirenz Cmin was below the 1 µg/mL therapeutic target for many patients. CONCLUSIONS: This study demonstrates that antileishmanial drug exposure was low in this cohort of HIV co-infected VL patients. Amphotericin B Cmax was 2-fold lower than previously observed in non-VL patients. Miltefosine exposure in HIV-VL co-infected patients was 35% lower compared with adult VL patients in Eastern Africa, only partially explained by a 19% lower dose, possibly warranting a dose adjustment. Adequate drug exposure in these HIV-VL co-infected patients is especially important given the high proportion of relapses.


Asunto(s)
Antiprotozoarios , Infecciones por VIH , Leishmaniasis Visceral , Preparaciones Farmacéuticas , Adulto , África Oriental , Antiprotozoarios/uso terapéutico , Cromatografía Liquida , Estudios de Cohortes , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Humanos , Leishmaniasis Visceral/complicaciones , Leishmaniasis Visceral/tratamiento farmacológico , Leishmaniasis Visceral/epidemiología , Fosforilcolina/uso terapéutico , Espectrometría de Masas en Tándem , Resultado del Tratamiento
13.
PLoS Negl Trop Dis ; 15(2): e0009107, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33592024

RESUMEN

INTRODUCTION: Abdominal ultrasound (US) is increasingly used in the diagnostic work-up of infectious diseases, but studies on its diagnostic value in visceral leishmaniasis (VL) are lacking. US could help to identify complications of spleen aspiration (SA). We aimed to assess the diagnostic value of US and the evolution of findings after VL treatment; the incidence and degree of splenic injury; and the pain perceived during SA. METHODOLOGY/RESULT: We conducted a cross-sectional prospective study at the Leishmaniasis Research and Treatment Center, Gondar, Ethiopia between Oct 2017 and Dec 2018. We enrolled VL suspects undergoing tissue aspiration; US were conducted before and after SA, and at the end of VL treatment. Splenic injury was graded using the American association of surgery trauma injury scale (grade 1-4). The pain perceived during SA was graded using a visual analogue scale. Out of 392 VL suspects, 192 (49%) were confirmed VL cases. The median age was 25 years (IQR 21-30). Massive splenomegaly and hepatomegaly were the most common US findings. Splenic nodules were seen in 3.7% of the 190 VL cases and 1.5% of the 197 non-VL cases. Ascites was more common in VL (16.4%) than in non-VL cases (9.1%). The frequency of US abnormalities decreased with treatment. None of the US findings had sufficient sensitivity and specificity to justify its use as a diagnostic test. US detected splenic injury in four of the 318 patients who had post-SA US. All four patients remained clinically stable. Pain was perceived as moderate or severe in 51% of patients. CONCLUSION: The diagnostic value of abdominal US for VL was low but found useful to detect subclinical splenic injury. SA caries a risk of splenic injury and was perceived painful by most. Further research on less invasive diagnostic tools is needed.


Asunto(s)
Leishmaniasis Visceral/diagnóstico por imagen , Complicaciones Posoperatorias/diagnóstico por imagen , Bazo/diagnóstico por imagen , Abdomen/diagnóstico por imagen , Adulto , Biopsia con Aguja/efectos adversos , Estudios Transversales , Etiopía , Femenino , Humanos , Masculino , Estudios Prospectivos , Bazo/patología , Ultrasonografía/métodos
14.
Int J Infect Dis ; 103: 72-80, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-33189940

RESUMEN

OBJECTIVES: This study described the population structure of M. tuberculosis complex (MTBc) strains among patients with pulmonary or lymph node tuberculosis (TB) in Northwest Ethiopia and tested the performance of culture isolation and MPT64-based speciation for Lineage 7 (L7). METHODS: Patients were recruited between April 2017 and June 2019 in North Gondar, Ethiopia. The MPT64 assay was used to confirm MTBc, and spoligotyping was used to characterize mycobacterial lineages. Line probe assay (LPA) was used to detect resistance to rifampicin and isoniazid. RESULTS: Among 274 MTBc genotyped isolates, there were five MTBc lineages: L1-L4 and L7 were identified, with predominant East-African-Indian (L3) (53.6%) and Euro-American (L4) (40.1%) strains, and low prevalence (2.6%) of Ethiopia L7. The genotypes were similarly distributed between pulmonary and lymph node TB, and all lineages were equally isolated by culture and recognized as MTBc by the MPT64 assay. Additionally, LPA showed that 259 (94.5%) MTBc were susceptible to both rifampicin and isoniazid, and one (0.4%) was multi-drug resistant (resistant to both rifampicin and isoniazid). CONCLUSION: These findings show that TB in North Gondar, Ethiopia, is mainly caused by L3 and L4 strains, with low rates of L7, confirmed as MTBc by MPT64 assay and with limited resistance to rifampicin and isoniazid.


Asunto(s)
Mycobacterium tuberculosis/clasificación , Tuberculosis Ganglionar/microbiología , Tuberculosis Pulmonar/microbiología , Adulto , África Oriental , Américas , Animales , Farmacorresistencia Bacteriana , Etiopía , Femenino , Variación Genética , Genotipo , Humanos , India , Isoniazida/farmacología , Júpiter , Masculino , Mycobacterium tuberculosis/efectos de los fármacos , Mycobacterium tuberculosis/genética , Mycobacterium tuberculosis/aislamiento & purificación , Rifampin/farmacología , Tuberculosis Ganglionar/diagnóstico , Tuberculosis Pulmonar/diagnóstico , Adulto Joven
15.
PLoS Negl Trop Dis ; 14(12): e0008963, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-33382690

RESUMEN

Diagnosis of a first-time visceral leishmaniasis (VL) infection in Ethiopia is established by use of a rapid diagnostic test (RDT) detecting antibodies against rK39, direct agglutination test (DAT) and microscopy according to the national algorithm. The performance of individual tests and algorithm is variable and depends on several factors, one being HIV status. Limited data are available on the performance of tests in VL-HIV coinfected patients. Assessment of the performance of DAT (ITM-A), rK39 ELISA (Serion) and six RDT (Onsite Leishmania Ab CTK, Antigen ICT Xinjier, IT Leish Biorad, Kalazar Detect Inbios, rK39 IgG1 Coris, rk28 IgG1 Coris) for the diagnosis of VL was done on a panel of 91 stored serum and plasma samples of 'first-episode' suspected VL patients, with HIV coinfection (n = 51) and without (n = 40). A combined reference standard was used: either positive microscopy on tissue aspirates, or in case of negative microscopy, positive PCR results on the aspirate slide. Additionally, endemic healthy controls (n = 20), non-endemic controls (n = 10) and patients with confirmed malaria infection (n = 10) were tested for specificity evaluation. Sensitivities ranged from 69.2% for DAT (applied cut-off ≥ 1/3200) to 92.2% for the Onsite RDT, whereas specificities ranged from 20.0% for Kalazar Antigen ICT to 100% for IT Leish and rK39 IgG1. Sensitivities from all assays decreased upon stratification according to HIV status but was only significantly different for rK39 Serion ELISA (p-value 0.0084) and the Onsite RDT (p-value 0.0159). In conclusion, performance of commercially available assays for VL on samples from Northern-Ethiopian patients varied widely with a substantial decrease in sensitivity in the VL-HIV coinfected group. Clear guidelines on minimal performance criteria of individual tests and algorithms are needed, as well as which reference standard should be used to determine the performance.


Asunto(s)
Antígenos de Protozoos/inmunología , Infecciones por VIH/complicaciones , Leishmania/inmunología , Leishmaniasis Visceral/diagnóstico , Pruebas de Aglutinación , Pruebas Diagnósticas de Rutina , Ensayo de Inmunoadsorción Enzimática , Etiopía/epidemiología , Humanos , Leishmaniasis Visceral/parasitología , Estándares de Referencia
16.
Trop Med Infect Dis ; 5(4)2020 Nov 06.
Artículo en Inglés | MEDLINE | ID: mdl-33172059

RESUMEN

Introduction: Observational studies are often inadequately reported, making it difficult to assess their validity and generalizability and judge whether they can be included in systematic reviews. We assessed the publication characteristics and quality of reporting of observational studies generated by the Structured Operational Research and Training Initiative (SORT IT). Methods: A cross-sectional analysis of original publications from SORT IT courses. SORT IT is a global partnership-based initiative aimed at building sustainable capacity for conducting operational research according to country priorities and using the generated evidence for informed decision-making to improve public health. Reporting quality was independently assessed using an adapted version of 'Strengthening the Reporting of Observational Studies in Epidemiology' (STROBE) checklist. Results: In 392 publications, involving 72 countries, 50 journals, 28 publishers and 24 disease domains, low- and middle-income countries (LMICs) first authorship was seen in 370 (94%) and LMIC last authorship in 214 (55%). Publications involved LMIC-LMIC collaboration in 90% and high-income-country-LMIC collaboration in 87%. The majority (89%) of publications were in immediate open access journals. A total of 346 (88.3%) publications achieved a STROBE reporting quality score of >85% (excellent), 41 (10.4%) achieved a score of 76-85% (good) and 5 (1.3%) a score of 65-75% (fair). Conclusion: The majority of publications from SORT IT adhere to STROBE guidelines, while also ensuring LMIC equity and collaborative partnerships. SORT IT is, thus, playing an important role in ensuring high-quality reporting of evidence for informed decision-making in public health.

17.
J Infect Dev Ctries ; 14(6.1): 10S-15S, 2020 06 29.
Artículo en Inglés | MEDLINE | ID: mdl-32614790

RESUMEN

INTRODUCTION: Following the recommendation of the Global Leprosy Strategy, Ethiopia targeted to reduce the incidence of new leprosy cases, and the proportion with severe disability (grade 2) from 13.6% in 2016 to < 1% in 2020. This study assessed the clinical profile of new leprosy cases and the sequelae of previously treated ones 20 years after leprosy was eliminated as a public health problem in the country. METHODOLOGY: Hospital based cross sectional study was conducted  by reviewing the medical records of all leprosy patients seen at the dermatology clinic of Boru Meda Hospital from August to December 2018.The  data were captured using a standard data collection form. RESULTS: Over the study period, 57 (27.4%) new cases and 151 (72.6%) previously treated cases were seen.The median age was 44 years (interquartile range 32-57). Among the newly diagnosed cases, two were under the age of 15 years , 51 (89.5%) were multibacillary and 34 (59.6%) had grade 2 disability. This included visual impairment in 10 (17.5%) and neurological complications in 44 (77.2%). Of the 151 previously treated cases, 104 (68.9%) presented with disabilities, including 97 (64.2%) with grade 2. Amongst previously treated cases, 130 (86.1%) had neurological complications. In addition, 53 (35.1%) had vision impairment. CONCLUSIONS: This study showed evidence of ongoing leprosy transmission and delayed diagnosis in the country. This calls for operational research to determine the underlying reasons and provide ways forward. At the same time, the high burden of disabilities in previously treated cases should be addressed.


Asunto(s)
Diagnóstico Tardío , Hospitales/estadística & datos numéricos , Lepra/diagnóstico , Lepra/epidemiología , Adulto , Estudios Transversales , Etiopía/epidemiología , Femenino , Humanos , Lepra/complicaciones , Lepra/transmisión , Masculino , Persona de Mediana Edad , Piel/microbiología , Piel/patología
18.
J Infect Dev Ctries ; 14(6.1): 16S-21S, 2020 06 29.
Artículo en Inglés | MEDLINE | ID: mdl-32614791

RESUMEN

INTRODUCTION: The majority of neglected tropical diseases (NTDs) have established primary skin manifestations or associated clinical feature. Skin NTDs often result in physical impairment and disfigurement, which can lead to disability. Skin diseases have been proposed as an entry point for integrated NTDs control. However, the magnitude and overlap of skin NTDs is poorly understood. METHODOLOGY: An institution-based cross-sectional study was done using medical records of dermatology patients between July 2017 and June 2018 in a dermatology service in Northeast Ethiopia. A total of 661 patient records were selected using simple random sampling. RESULTS: A total of 656 complete records were included in analysis. Skin NTDs constituted 17.2% (n = 113) of the overall of skin diseases. Of skin NTDS, cutaneous leishmaniasis (n = 40; 35.4%), leprosy (n = 38; 33.6%), and scabies (n = 31; 27.4%) were the most common. Additionally, there were four cases of mycetoma. Of the non NTDs, poverty-related infections such as superficial fungal (n = 118; 21.1%) and bacterial (n = 33; 5.2%) infections were also frequent. Tinea capitis was the most common superficial fungal infections. Impetigo and cellulitis were the predominant bacterial infections. CONCLUSIONS: Skin NTDsand other poverty related skin infections were common at the dermatology service. Dermatological services could act as a good entry point for integrated management of skin NTDs. Future studies should assess how different preventive strategies like contact tracing, early diagnosis and mass drug administration can be integrated.


Asunto(s)
Enfermedades Desatendidas/diagnóstico , Atención Dirigida al Paciente/métodos , Enfermedades de la Piel/diagnóstico , Enfermedades de la Piel/epidemiología , Adolescente , Adulto , Anciano , Estudios Transversales , Etiopía/epidemiología , Femenino , Hospitales/estadística & datos numéricos , Humanos , Leishmaniasis Cutánea/diagnóstico , Leishmaniasis Cutánea/epidemiología , Masculino , Persona de Mediana Edad , Enfermedades Desatendidas/epidemiología , Pobreza , Enfermedades de la Piel/microbiología , Enfermedades de la Piel/parasitología , Medicina Tropical , Adulto Joven
19.
J Infect Dev Ctries ; 14(6.1): 53S-57S, 2020 06 29.
Artículo en Inglés | MEDLINE | ID: mdl-32614797

RESUMEN

INTRODUCTION: Zoonotic parasitic infections such as echinococcosis affect cattle, sheep and goats by lowering quality of meat and hides as well as decreasing milk production. The burden of such diseases among humans is usually underestimated as they are difficult to diagnose. We used abattoir data to estimate the prevalence of zoonotic parasitic infections in animals. METHODOLOGY: Data from 2005-2018 was used from the registry of an abattoir in Northwest Ethiopia. Frequencies, proportions and trends over time were analyzed. Meat inspection was conducted by visualization, palpation and incision. RESULTS: A total of 58,787 animals were slaughtered in the abattoir during the study period. These included 51,956 (88 %) cattle, 5,890 (10%) sheep and 941 (2%) goats. The detected parasites included Echinococcus in 12,334/58,787 (21%) and Fasciola in 10,551/58,787 (18%) animals. Echinococcus infection was highest among goats (267/941, 28%), followed by cattle (11,591/51,956, 22%) and sheep (476/5,890, 8%). Fasciolosis was detected in 9,877/51,956 (19%) cattle and 178/941 (19%) goats. The number of animals slaughtered strongly decreased over time from 8,405 in 2006 to 1,605 in 2018. However, the proportion of parasitic infections remained high with some fluctuations over the study period. CONCLUSIONS: Echinococcosis and fasciolosis were very common with one out of five animals slaughtered infected. This is of public health concern and needs urgent multi-sectorial efforts from stakeholders at the national and regional level for control of these diseases. One health program approaches may warrant the control of transmission to humans.


Asunto(s)
Mataderos/estadística & datos numéricos , Enfermedades de los Bovinos , Equinococosis/veterinaria , Fascioliasis/veterinaria , Enfermedades de las Cabras , Salud Única , Parásitos/aislamiento & purificación , Enfermedades de las Ovejas , Animales , Bovinos/parasitología , Enfermedades de los Bovinos/epidemiología , Enfermedades de los Bovinos/parasitología , Equinococosis/epidemiología , Echinococcus/aislamiento & purificación , Etiopía/epidemiología , Fasciola/aislamiento & purificación , Fascioliasis/epidemiología , Femenino , Enfermedades de las Cabras/epidemiología , Enfermedades de las Cabras/parasitología , Cabras/parasitología , Humanos , Ganado/parasitología , Masculino , Parásitos/clasificación , Prevalencia , Ovinos/parasitología , Enfermedades de las Ovejas/epidemiología , Enfermedades de las Ovejas/parasitología , Zoonosis/epidemiología , Zoonosis/parasitología , Zoonosis/transmisión
20.
J Infect Dev Ctries ; 14(6.1): 48S-52S, 2020 06 29.
Artículo en Inglés | MEDLINE | ID: mdl-32614796

RESUMEN

INTRODUCTION: Orphans are at high risk for neglected tropical diseases (NTDs) and other comorbidities such as malnutrition. We investigated how many orphans suffered from scabies, other NTDs and malnutrition. METHODOLOGY: A descriptive study using medical records of orphans referred to a teaching hospital in Addis Ababa, Ethiopia from December 2014 to December 2018 was done. Files documenting NTDs were reviewed in detail for age, referral diagnosis, and nutritional status. Nutritional assessment was done using the WHO Standard growth curve, classifying children as stunted (height for age Z score < -2SD or wasted (weight for length Z score < -2SD). RESULTS: Of the 852 orphans referred, 23.1% (196/852) was diagnosed with scabies, amongst which 28.1% (55/196) had multiple episodes. The median age (interquartile range) of the children with scabies was 3 (2-5) months. 85.2% (169/196) of the orphans with scabies were stunted and /or wasted. No other NTDs were reported. All of the scabies cases identified were not documented in the referral letter of the orphanage. CONCLUSIONS: There is ongoing transmission of scabies among children in the orphanage. Amongst orphans with scabies, an alarmingly high percentage was malnourished. Referrals from orphanages may provide an opportunity to detect NTDs and this is being missed.


Asunto(s)
Niños Huérfanos/estadística & datos numéricos , Desnutrición/epidemiología , Escabiosis/epidemiología , Escabiosis/transmisión , Niño , Preescolar , Etiopía/epidemiología , Femenino , Hospitales/estadística & datos numéricos , Humanos , Lactante , Recién Nacido , Masculino , Estado Nutricional , Investigación Operativa , Orfanatos/normas , Investigación Cualitativa , Estudios Retrospectivos , Escabiosis/diagnóstico
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