Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 158
Filtrar
Más filtros

Tipo del documento
Intervalo de año de publicación
1.
Vox Sang ; 2024 Jun 13.
Artículo en Inglés | MEDLINE | ID: mdl-38872389

RESUMEN

BACKGROUND AND OBJECTIVES: Trypanosoma cruzi is the etiologic agent of Chagas disease (CD), an anthropozoonosis from the American continent that progresses from an acute phase to an indeterminate phase, followed by a chronic symptomatic phase in around 30% of patients. In countries where T. cruzi is not endemic, many blood transfusion services test blood donors who have stayed in an endemic country ('at-risk stay')-even if they do not present with other risk factors. However, the efficiency of this approach has been questioned. MATERIALS AND METHODS: On 18 September 2023, a worldwide survey was distributed among employees of blood transfusion services. The questions mainly pertained to CD's endemicity in the blood services' region, the current testing policy for T. cruzi and the number of confirmed positive results among donors with a prior at-risk stay alone (i.e., without other risk factors for T. cruzi infection). RESULTS: Twenty-six recipients completed the survey. Of the 22 (84.6%) blood services that operated in a non-endemic region, 9 (42.9%) tested donors for T. cruzi, including 8 (88.9%) that considered the travel history or the duration of the stay (alone) in their testing algorithm ('study blood services'). Over 93 years of observation among all study blood services, 2 donations from donors with an at-risk stay alone and 299 from those with other risk factors were confirmed positive for T. cruzi. CONCLUSION: The study findings question the utility of testing blood donors who have stayed in an endemic country without other risk factors.

2.
BMC Infect Dis ; 24(1): 63, 2024 Jan 08.
Artículo en Inglés | MEDLINE | ID: mdl-38191312

RESUMEN

BACKGROUND: Talaromyces marneffei is endemic to eastern India, Southeast Asia, and Guangdong and Guangxi provinces in China. It is common in immunocompromised individuals, especially in HIV-infected patients. CASE PRESENTATION: A 66-year-old male who had a history of hypertension and resided in Shandong Province (Northern China) was admitted for recurrent fever for one month. The patient had recurrent fever, multiple lymphadenopathies, hepatosplenomegaly, a back rash, and a progressive decrease in white blood cells and platelets. Talaromyces marneffei was isolated from peripheral blood and bone marrow after admission, and suspected fungal cells were found via lymph node pathology. The patient's infection secondary to haemophagocytic syndrome continued to worsen despite antifungal, anti-inflammatory, and symptomatic treatment, leading to death due to multiple-organ failure. CONCLUSION: Although rare, infection due to Talaromyces marneffei in HIV-negative patients has been increasing in recent years, and we should be vigilant about "new" infections in nonendemic areas.


Asunto(s)
Infecciones por VIH , Linfohistiocitosis Hemofagocítica , Masculino , Humanos , Anciano , Linfohistiocitosis Hemofagocítica/complicaciones , Linfohistiocitosis Hemofagocítica/diagnóstico , China
3.
J Emerg Med ; 66(6): e690-e693, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38772754

RESUMEN

BACKGROUND: Cutaneous leishmaniasis (CL) is a vector-borne parasitic infection endemic to many sub-tropical regions worldwide. In the Americas, Leishmania braziliensis is responsible for most reported CL cases. Variable symptom presentation and susceptibility to secondary infection make diagnosing CL a difficult proposition for physicians who may not encounter cases frequently. CASE REPORT: We present the case of a 50-year-old man with multiple progressive lesions, diagnosed initially as a bacterial infection, who presented to a North American emergency department after several unsuccessful trials of antibiotic therapy. Eventually, polymerase chain reaction testing of a wound biopsy sample confirmed the presence of L. braziliensis. After a complicated course, the patient's infection resolved after tailored antiparasitic therapy. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: This case highlights the need to include travel history in the evaluation of atypical dermatologic infections.


Asunto(s)
Leishmaniasis Cutánea , Humanos , Masculino , Persona de Mediana Edad , Leishmaniasis Cutánea/diagnóstico , Leishmaniasis Cutánea/tratamiento farmacológico , Leishmania braziliensis/patogenicidad , Antiprotozoarios/uso terapéutico , Estados Unidos
4.
Clin Microbiol Rev ; 35(2): e0015221, 2022 04 20.
Artículo en Inglés | MEDLINE | ID: mdl-35239422

RESUMEN

Population movements have turned Chagas disease (CD) into a global public health problem. Despite the successful implementation of subregional initiatives to control vectorial and transfusional Trypanosoma cruzi transmission in Latin American settings where the disease is endemic, congenital CD (cCD) remains a significant challenge. In countries where the disease is not endemic, vertical transmission plays a key role in CD expansion and is the main focus of its control. Although several health organizations provide general protocols for cCD control, its management in each geopolitical region depends on local authorities, which has resulted in a multitude of approaches. The aims of this review are to (i) describe the current global situation in CD management, with emphasis on congenital infection, and (ii) summarize the spectrum of available strategies, both official and unofficial, for cCD prevention and control in countries of endemicity and nonendemicity. From an economic point of view, the early detection and treatment of cCD are cost-effective. However, in countries where the disease is not endemic, national health policies for cCD control are nonexistent, and official regional protocols are scarce and restricted to Europe. Countries of endemicity have more protocols in place, but the implementation of diagnostic methods is hampered by economic constraints. Moreover, most protocols in both countries where the disease is endemic and those where it is not endemic have yet to incorporate recently developed technologies. The wide methodological diversity in cCD diagnostic algorithms reflects the lack of a consensus. This review may represent a first step toward the development of a common strategy, which will require the collaboration of health organizations, governments, and experts in the field.


Asunto(s)
Enfermedad de Chagas , Trypanosoma cruzi , Enfermedad de Chagas/diagnóstico , Enfermedad de Chagas/tratamiento farmacológico , Enfermedad de Chagas/epidemiología , Humanos , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Internacionalidad
5.
Liver Int ; 43 Suppl 1: 101-107, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37086008

RESUMEN

Hepatitis delta virus (HDV) infection causes the severest form of viral hepatitis in humans. Discovered in 1977, it was considered an infection prevalent in the eastern Mediterranean region. Today it is recognized as a global infection of public health importance, however accurate prevalence remains uncertain because of lack of good epidemiological studies. Under-screening for HDV is the single most important factor in under-estimating the true burden of infection. Urgent efforts are therefore needed to apply reliable screening tools and robust surveillance methodologies to study HDV. There is now a move by major hepatology societies to recommend HDV antibody testing in all persons with HBV infection. Important differences also need to be recognized between countries considered endemic or non-endemic countries. While the endemic infections likely spread horizontally in the general population, and is quite often nosocomial, in non-endemic countries special populations may carry the greater burden, such as persons with injection drug use and various sexual exposures. Even in endemic countries, HDV often exists in significant pockets of the general population. HDV has been categorized as an orphan infection due to lack of approved therapies. Recently there have significant advances in therapy and further clinical trials continue. However, as new therapies are approved, equitable access to the medications will become a major public health issue, particularly because most HDV patients live in low or low middle income countries.


Asunto(s)
Coinfección , Virus de la Hepatitis Delta , Humanos , Salud Pública , Anticuerpos Antihepatitis , Prevalencia
6.
Vox Sang ; 117(9): 1090-1097, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35768998

RESUMEN

BACKGROUND AND OBJECTIVES: Transfusion-transmitted viruses count among the greatest threats to blood safety. In Argentina, current laws oblige testing all donated blood for the presence of antibodies against human T-cell lymphotropic viruses 1 and 2 (HTLV-1/2). In endemic zones of the country, a high rate of seronegative HTLV-1 individuals with clear evidence of infection because of symptoms and/or presence of tax sequences of HTLV-1 and/or IgG anti-Tax antibodies has been recently described. Migration from endemic to nonendemic zones of Argentina is very frequent. MATERIALS AND METHODS: During a 1-year period, in the blood bank of Córdoba city, we performed molecular screening of all donors who were born in or arose from endemic zones for HTLV-1/2 in Argentina and neighbouring countries. RESULTS: By screening 219 bp of HTLV-1/2 tax gene, 0.6% (2/317) of the blood donors proved to be positive for HTLV-1 tax sequence. One of the donors presented anti-Tax antibodies, demonstrating the transcriptional activity of the tax gene, and the other donor was also positive for LTR and pol gene sequences. The HTLV-1 genetic analysis of the LTR sequence determined that it belonged to the Cosmopolitan subtype HTLV-1aA. CONCLUSION: These findings suggest potential limitations of some currently approved screening assays for HTLV-1 detection applied in some donor populations and the possibility of an HTLV-1 seronegative carrier state with the potential for silent transmission by blood.


Asunto(s)
Infecciones por HTLV-I , Virus Linfotrópico T Tipo 1 Humano , Bancos de Sangre , Infecciones por HTLV-I/epidemiología , Virus Linfotrópico T Tipo 1 Humano/genética , Virus Linfotrópico T Tipo 2 Humano/genética , Humanos , Linfocitos T
7.
Vox Sang ; 117(1): 58-63, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34111301

RESUMEN

BACKGROUND AND OBJECTIVES: Chagas disease, caused by Trypanosoma cruzi, is endemic to Mexico, Central and South America. While initially limited to the Americas, emigration of infected persons triggered geographically broader blood safety challenges. To mitigate transfusion-transmitted Chagas (TTC), transfusion services implemented approaches including risk factor questions and serologic testing. We sought to understand and compare strategies in non-endemic countries. MATERIALS AND METHODS: Transfusion services in International Society of Blood Transfusion (ISBT)-affiliated organizations and members of the ISBT Working Party on Transfusion-Transmitted Infectious Diseases were invited to complete an online survey on T. cruzi mitigation strategies. The survey queried about cases of TTC, risk factors, testing methodology, educational materials, pathogen reduction, donor/product management, donor deferral and perceived public health concerns surrounding TTC. RESULTS: Responses were received from 27 institutions in 22 countries. Most countries (77.3%) reported no historical TTC cases, while 18.2% reported 1-5 cases and 4.5% reported 6-10 cases. Concern about Chagas among the general public and public health authorities was low, but 12 of 25 blood centres reported moderate/high concern. Overall, 17 countries mitigated for TTC: 15 used risk factor questions and 10tested for T. cruzi antibodies. Ten countries used pathogen reduction but not specifically to prevent TTC. CONCLUSION: While Chagas is rarely cited as a public health concern, blood centres in many non-endemic countries, including those outside the Americas, implemented measures to mitigate risk. Mitigation focussed on risk factors associated with Latin American immigrants and serologic testing. Thus, despite the rarity of TTC, many non-endemic countries continue to address it as an ongoing blood safety risk.


Asunto(s)
Enfermedad de Chagas , Trypanosoma cruzi , Donantes de Sangre , Transfusión Sanguínea , Emigración e Inmigración , Humanos
8.
Malar J ; 21(1): 197, 2022 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-35729617

RESUMEN

BACKGROUND: Important knowledge gaps exist in the understanding of the management of the risks of imported malaria in Canada among Francophone immigrants from sub-Saharan Africa (FISSA). The aim of this cross-sectional study was to investigate the malaria related-knowledge, attitude and practices (KAP) of FISSA in Edmonton, where these immigrants are in an official minority language situation and the impact of language barriers on these factors. METHODS: A structured survey was used to examine the KAP of 382 FISSA in the Edmonton area from 2018 to 2019. Fisher's Exact Test was applied to determine if there were associations between knowledge of malaria and different risk factors. RESULTS: Almost all FISSA (97%) had an accurate knowledge of fever as the key symptom of malaria. Interestingly, 60% of participants identified bed nets as a preventive method and only 19% of participants had accurate knowledge of malaria transmission. An accurate knowledge of symptoms was significantly associated with a high perceived risk of contracting malaria [odds ratio (OR) 4.33, 95% confidence interval (CI) 1.07-20.62]. Furthermore, even though 70% of FISSA had a high perceived risk of contracting malaria in endemic regions, only 52% of travellers had a pre-travel medical encounter. Importantly, language was not the predominant reason for not seeking pre-travel medical advice, although 84% of respondents chose French as their official language of preference when seeking medical advice. Having a French-speaking physician was correlated with satisfactory prevention knowledge (OR 1.96, 95% CI 1.16-3.35). With respect to health-seeking behaviour, 88% of respondents with a child < 5 years of age would seek medical care for fever in the child after travel to sub-Saharan Africa (SSA). CONCLUSION: This study highlights that factors other than knowledge, risk assessment, and language might determine the lack of compliance with pre-travel medical encounters. It underscores the need for effective strategies to improve this adherence in minority settings.


Asunto(s)
Emigrantes e Inmigrantes , Malaria , Niño , Estudios Transversales , Fiebre , Conocimientos, Actitudes y Práctica en Salud , Humanos , Malaria/epidemiología , Viaje
9.
Eur J Clin Microbiol Infect Dis ; 41(6): 925-939, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35546215

RESUMEN

Coccidioidomycosis is caused by the dimorphic fungi Coccidioides species which is endemic in the Western hemisphere. Reports on the characteristics of travel-related disseminated coccidioidomycosis in immunocompetent patients are rare, especially in non-endemic regions. The multifaceted symptoms of this condition present a diagnostic challenge to clinicians. This study aimed to review immunocompetent patients diagnosed with disseminated coccidioidomycosis in a tertiary hospital in Eastern China and other non-endemic areas, and to emphasize the importance of combining travel history with clinical manifestations and proper diagnostic examinations. This study retrospectively reviewed a case series of disseminated coccidioidomycosis diagnosed in an academic hospital in Eastern China. We conducted a global literature review of disseminated coccidioidomycosis in immunocompetent patients with travel history. We identified six patients in our case series and reviewed 42 cases in the literature. Travel history included Mexico, Arizona, California, and regions of low endemicity. Extrapulmonary sites of infection, which presented with diverse signs and symptoms, involved the skin and soft tissue, musculoskeletal system, lymph nodes, and central nervous system. Misdiagnoses and diagnostic delays were common. Next-generation sequencing substantially promoted precise diagnosis in our series. The overall prognosis for immunocompetent individuals was positive, mainly benefited from long-term azole therapies. The patients that succumbed had either central nervous system involvement or multiorgan dissemination. Progressive pneumonia with varied symptoms and travel history should alert healthcare professionals in non-endemic areas to consider the possibility of Coccidioides species infection. We recommend detailed history-taking and hypothesis-free detection of pathogens for cases with diagnostic delay.


Asunto(s)
Coccidioidomicosis , Coccidioides/fisiología , Coccidioidomicosis/diagnóstico , Coccidioidomicosis/tratamiento farmacológico , Coccidioidomicosis/epidemiología , Diagnóstico Tardío , Humanos , Estudios Retrospectivos , Viaje , Enfermedad Relacionada con los Viajes
10.
Infection ; 50(1): 169-178, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34351597

RESUMEN

PURPOSE: Talaromyces marneffei (TM) is a pathogenic fungus endemic in Southeast Asia and human immunodeficiency virus (HIV)-positive populations, but studies related to non-endemic areas and HIV-negative populations are still limited. Therefore, this study aims to provide more additional evidence for clinical work of talaromycosis. METHODS: To collect clinical information of patients with talaromycosis admitted to hospitals in Zhejiang Province, China from January 1, 2010 to May 31, 2020, retrospectively analyzed clinical characteristics and prognosis, COX multivariate regression analysis was used for survival analysis. RESULTS: A total of 92 patients were enrolled, including 76 males, 73 HIV-positive patients, with an average age of 40.1 ± 13.0. Compared to HIV-positive group, the negative group had higher admission age (47.7 ± 14.6 vs 38.1 ± 11.9, p = 0.003) and lower proportion of male (89.0% vs 57.9%, p = 0.004), there was no significant difference in imaging of lungs. There were significantly more HIV-positive patients in those with pleural effusion (100% vs 69.4%, p = 0.001). COX multivariate regression analysis suggested pleural effusion (HR = 3.220; 95% CI 1.117-9.287; p = 0.030) and HIV infection (HR = 0.057; 95% CI 0.009-0.370; p = 0.003) which were independent predictors of prognosis in patients with talaromycosis. CONCLUSIONS: In non-endemic areas, clinical symptoms, signs, and laboratory tests of patients with talaromycosis are similar to those in endemic areas. Patients with pleural effusion have lower survival rate, HIV-infected people are less likely to relapse, and there is no significant correlation between extent of lung involvement and survival of infected patients.


Asunto(s)
Infecciones por VIH , Adulto , VIH , Infecciones por VIH/complicaciones , Infecciones por VIH/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Micosis , Pronóstico , Estudios Retrospectivos
11.
Scand J Gastroenterol ; 57(8): 953-957, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35246008

RESUMEN

BACKGROUND: In Scandinavia, the incidence of cystic echinococcosis (CE) and alveolar echinococcosis (AE) is low and almost exclusively an imported disease following the trends of immigration. The aim of the study was to review available data on clinical management and outcome for patients treated at Oslo University Hospital, a referral centre for echinococcosis in Norway, with special emphasis on surgical treatment. METHODS: All patients admitted with echinococcosis between January 2000 and December 2020 were identified. Medical records were reviewed retrospectively concerning patient demographics, treatment strategy, surgical procedures, complications and outcomes. RESULTS: A total of 92 patients with median age 37 years (range 4-85) were identified. Sixty-eight patients (74%) were symptomatic. All patients, except for two, were immigrants to Norway and born in endemic areas. Ninety patients were diagnosed with CE and two with AE. Location of the cysts was most commonly in the liver (86%) followed by peritoneum, lungs, and spleen. All patients with active cysts were treated with albendazole. Surgical treatment was performed in 51 (56%) patients. The most common reason for abstaining from surgical treatment was that the diagnostic work-up revealed inactive cysts or interventional radiology was performed. Of the 51 patients who underwent surgery, a radical procedure was performed in 32 (64%) cases, a conservative procedure in 12 (24%), and a combination in six (12%). Clavien Dindo grade ≥3 complications occurred in 30%, and 90-day mortality was 2%. Bile leakage occurred in seven patients and was treated successfully with endoscopic retrograde cholangiopancreatography with biliary stent placement in all patients. CONCLUSION: In a low-endemic area like Norway, management of echinococcus includes medical therapy, surgery, and/or interventional radiology. Surgical intervention seems to be effective, and is associated with acceptable morbidity rates.


Asunto(s)
Quistes , Equinococosis Hepática , Equinococosis , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Equinococosis/epidemiología , Equinococosis/cirugía , Equinococosis Hepática/complicaciones , Equinococosis Hepática/epidemiología , Equinococosis Hepática/cirugía , Humanos , Persona de Mediana Edad , Estudios Retrospectivos , Centros de Atención Terciaria , Adulto Joven
12.
Transfus Med Hemother ; 49(4): 205-217, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36159954

RESUMEN

Background: Malaria is a mosquito-borne infectious disease caused by protozoan parasites of the genus Plasmodium. These parasites can be transmitted by blood transfusion especially through Red Cell Blood Concentrates collected from asymptomatic and parasitemic donors. As migration of populations from endemic areas to Europe and overseas recreational travel to endemic regions increase, there is growing risk of transfusion-transmitted malaria (TTM) in nonendemic regions of the world. The present work provides an overview of the mitigation strategies in nonendemic countries and their effectiveness and discusses possible approaches to evolve the strategies in order to maintain both a safe and adequate blood supply. Summary: The historical and current situation of malaria and TTM in Europe and on the North American continent are described. The infectivity of Plasmodium in blood components and the consequences of TTM are presented, along with the regulations and guidelines for TTM mitigation in Europe, USA, and Canada. The regulations/guidelines currently in place in Europe allow a certain amount of leeway for local policies. A questionnaire was used to survey European countries regarding their current strategies and recent TTM cases. From the questionnaire and published cases, approximately 20 cases of TTM were identified in the past 20 years in the USA and Europe. The vast majority of implicated donors have been former residents of malaria-endemic areas, particularly former residents of hyperendemic areas in Africa. The most recent TTM cases are discussed in detail to provide insight into the gaps in current strategies. The utility and uncertainties of pathogen reduction and serological and molecular testing methods are discussed. Key Messages: Overall, the risk of transfusion-associated malaria in nonendemic countries is considered to be low and very few TTM cases occurred in these regions in the last 20 years. The questionnaire-based strategy with questions about risk in relation to malaria exposure with or without selective testing based on questioning seems to be relatively effective, although rare and sometimes fatal transmissions still occur. An outstanding question is whether in the future molecular methods may further improve the safety of blood products and help constrain the loss of donors.

13.
Int J Mol Sci ; 23(19)2022 Oct 03.
Artículo en Inglés | MEDLINE | ID: mdl-36233023

RESUMEN

BACKGROUND: The purpose of this study was to evaluate the status of Epstein-Barr virus (EBV) infection and the expression of programmed cell death ligand-1 (PD-L1) in tumor samples from patients with nasopharyngeal carcinoma (NPC). METHODS: Evaluation of EBV infection was performed through the detection of EBV-encoded small ribonucleic acids (EBER) by in situ hybridization, and PD-L1 expression was performed through immunohistochemistry. RESULTS: In total, 124 samples were evaluated for EBER and 120 for PD-L1 expression. A total of 86.3% of cases were positive for EBER and 55.8% were positive for PD-L1. There was a correlation between EBER positivity and the presence of undifferentiated carcinoma histology (p = 0.007) as well as the absence of tobacco history (p = 0.019). There was a correlation between PD-L1 expression and EBER positivity (p = 0.004). There was no statistically significant difference between overall survival (OS) and EBER (p = 0.290) or PD-L1 (p = 0.801) expression. CONCLUSIONS: This study corresponds to one of the largest cohorts of NPC in a non-endemic region. Phase III studies with checkpoint inhibitors are ongoing and may provide more data about the role of PD-L1 expression in this disease.


Asunto(s)
Infecciones por Virus de Epstein-Barr , Neoplasias Nasofaríngeas , Antígeno B7-H1/metabolismo , Infecciones por Virus de Epstein-Barr/complicaciones , Herpesvirus Humano 4/metabolismo , Humanos , Ligandos , Carcinoma Nasofaríngeo
14.
Saudi Pharm J ; 30(11): 1679-1681, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36247532

RESUMEN

An outbreak of monkeypox Viral Disease in non-endemic countries in May 2022 is increasingly spreading. Clinicians and other healthcare professionals need to understand the aetiology and characteristics of the monkeypox pathogen and illness. By familializing themselves with these characteristics, they can map out the outbreak and roll out necessary public health mitigation measures to curb the spread. This short communication presents a summarized message regarding the aetiology, mode of transmission, clinical features, risk factors, diagnosis, treatment, and prevention of monkeypox viral disease. Considerations for surveillance and reporting have also been highlighted.

15.
Rep Pract Oncol Radiother ; 27(3): 401-409, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36186694

RESUMEN

Background: Nasopharyngeal carcinoma (NPC) is rare in the UK. The aim of the current study was to investigate survival outcomes for patients with NPC treated with (chemo)radiotherapy using 65 Gy in 30 fractions in a non-endemic region. Materials and methods: All consecutive 62 patients with histology proven non-metastatic nasopharyngeal carcinoma diagnosed between January 2009 to June 2019 were included in this retrospective analysis. Results: Median age was 59 years (range:19-81). The majority of patients had stage III disease (66.1%). Induction chemotherapy was given in 21% of patients and 82.3% of patients received concomitant systemic therapy. All patients were treated with 65 Gy in 30 fractions. There was disease recurrence in 17.4% patients. The 5-year disease-free, disease-specific and overall survival were 81.9%, 79.2% and 76.4%, respectively. On univariate analysis, disease recurrence was associated with N-stage (p = 0.047) and overall stage group (p = 0.023). Conclusion: To the best of authors' knowledge, this is the first report of the use of 65 Gy in 30 fractions of radiotherapy ± weekly cisplatin chemotherapy in NPC in a real-world setting. Our results are comparable to that from other non-endemic regions of the world using different dose fractionation of (chemo)radiotherapy. Future randomised control trials are warranted to compare various dose fractionations in these settings.

16.
Pediatr Dev Pathol ; 24(6): 559-563, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34369222

RESUMEN

Chagas disease, once confined to rural Latin America is an increasing public health concern in non-endemic countries due to population movements. Here we present an unexpected finding of a placenta infected with T. cruzi from a Brazilian woman residing in Ireland. Histology of the placenta showed a lymphocytic chorioamnionitis with multinucleated giant cells (MNGCs) as well as cord vasculitis and funisitis. Amastigotes of trypanosomiasis were found in both cord and membranes. The placenta parenchyma, however, had no villitis or amastigotes and maturation was appropriate for gestation. To date, there have been few reported cases of vertical transmission in non-endemic countries. We discuss the histological findings and review the literature on potential modes of transmission from mother to fetus.


Asunto(s)
Enfermedad de Chagas , Trypanosoma cruzi , Enfermedad de Chagas/diagnóstico , Femenino , Feto , Humanos , Transmisión Vertical de Enfermedad Infecciosa , Placenta , Embarazo
17.
Parasitology ; 147(9): 922-931, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32338232

RESUMEN

Human African trypanosomiasis (HAT) is caused by Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense and caused devastating epidemics during the 20th century. Due to effective control programs implemented in the last two decades, the number of reported cases has fallen to a historically low level. Although fewer than 977 cases were reported in 2018 in endemic countries, HAT is still a public health problem in endemic regions until it is completely eliminated. In addition, almost 150 confirmed HAT cases were reported in non-endemic countries in the last three decades. The majority of non-endemic HAT cases were reported in Europe, USA and South Africa, due to historical alliances, economic links or geographic proximity to disease-endemic countries. Furthermore, with the implementation of the 'Belt and Road' project, sporadic imported HAT cases have been reported in China as a warning sign of tropical diseases prevention. In this paper, we explore and interpret the data on HAT incidence and find no positive correlation between the number of HAT cases from endemic and non-endemic countries. This data will provide useful information for better understanding the imported cases of HAT globally in the post-elimination phase.


Asunto(s)
Enfermedades Transmisibles Importadas/epidemiología , Enfermedades Endémicas/estadística & datos numéricos , Tripanosomiasis Africana/epidemiología , Enfermedades Transmisibles Importadas/parasitología , Humanos , Incidencia , Tripanosomiasis Africana/parasitología
18.
Malar J ; 18(1): 230, 2019 Jul 10.
Artículo en Inglés | MEDLINE | ID: mdl-31291951

RESUMEN

BACKGROUND: Malaria was eliminated in Spain in 1964. Since then, more than 10,000 cases of malaria have been reported, mostly in travellers and migrants, making it the most frequently imported disease into this country. In order to improve knowledge on imported malaria cases characteristics, the two main malaria data sources were assessed: the national surveillance system and the hospital discharge database (CMBD). METHODS: Observational study using prospectively gathered surveillance data and CMBD records between 2002 and 2015. The average number of hospitalizations per year was calculated to assess temporal patterns. Socio-demographic, clinical and travel background information were analysed. Bivariate and multivariable statistical methods were employed to evaluate hospitalization risk, fatal outcome, continent of infection and chemoprophylaxis failure and their association with different factors. RESULTS: A total of 9513 malaria hospital discharges and 7421 reported malaria cases were identified. The number of reported cases was below the number of hospitalizations during the whole study period, with a steady increase trend in both databases since 2008. Males aged 25-44 were the most represented in both data sources. Most frequent related co-diagnoses were anaemia (20.2%) and thrombocytopaenia (15.4%). The risks of fatal outcome increased with age and were associated with the parasite species (Plasmodium falciparum). The main place of infection was Africa (88.9%), particularly Equatorial Guinea (33.2%). Most reported cases were visiting friends and relatives (VFRs) and immigrants (70.2%). A significant increased likelihood of hospitalization was observed for children under 10 years (aOR:2.7; 95% CI 1.9-3.9), those infected by Plasmodium vivax (4.3; 95% CI 2.1-8.7) and travellers VFRs (1.4; 95% CI 1.1-1.7). Only 4% of cases reported a correct regime of chemoprophylaxis. Being male, over 15 years, VFRs, migrant and born in an endemic country were associated to increased risk of failure in preventive chemotherapy. CONCLUSIONS: The joint analysis of two data sources allowed for better characterization of imported malaria profile in Spain. Despite the availability of highly effective preventive measures, the preventable burden from malaria is high in Spain. Pre-travel advice and appropriately delivered preventive messages needs to be improved, particularly in migrants and VFRs.


Asunto(s)
Antimaláricos/administración & dosificación , Enfermedades Transmisibles Importadas/epidemiología , Hospitalización/estadística & datos numéricos , Malaria Falciparum/epidemiología , Malaria Vivax/epidemiología , Adolescente , Adulto , Factores de Edad , Quimioprevención/estadística & datos numéricos , Enfermedades Transmisibles Importadas/parasitología , Enfermedades Transmisibles Importadas/prevención & control , Femenino , Humanos , Incidencia , Malaria Falciparum/parasitología , Malaria Falciparum/prevención & control , Malaria Vivax/parasitología , Malaria Vivax/prevención & control , Masculino , Persona de Mediana Edad , Plasmodium falciparum/fisiología , Plasmodium vivax/fisiología , Prevalencia , Factores de Riesgo , Factores Sexuales , España/epidemiología , Viaje/estadística & datos numéricos , Adulto Joven
19.
BMC Pulm Med ; 19(1): 46, 2019 Feb 21.
Artículo en Inglés | MEDLINE | ID: mdl-30791902

RESUMEN

BACKGROUND: Opportunistic infections, while well studied in the AIDS population, continue to have variable and surprising presentations. Here, we present a case of disseminated histoplasmosis with disseminated nontuberculous mycobacterial infection in a 50 year old man with long standing AIDS living in a non-endemic area. CASE PRESENTATION: Patient presented with a constellation of symptoms, and imaging of the chest showed a pulmonary mass with cavitation, multiple nodules, and ground glass opacities. Further investigations revealed granulomatous lung nodules and fungemia consistent with Histoplasma capsulatum, and coinfection with disseminated nontuberculous mycobateria in a nonendemic area. CONCLUSIONS: Immunocompromised patients risk co-inhabitation by multiple infectious organisms. Some of these organisms may preside in the host for years prior to reactivation. Clinicians in non endemic areas should therefore be careful to not overlook specific organisms based on a lack of a recent travel history. Physicians in nonendemic areas should become more familiar with the clinical findings and diagnostic approach of infectious such as Histoplasmosis, to ensure earlier recognition and treatment in immunocompromised individuals.


Asunto(s)
Infecciones Oportunistas Relacionadas con el SIDA/complicaciones , Síndrome de Inmunodeficiencia Adquirida/complicaciones , Bacteriemia/complicaciones , Fungemia/complicaciones , Histoplasmosis/complicaciones , Infecciones por Mycobacterium no Tuberculosas/complicaciones , Infecciones Oportunistas Relacionadas con el SIDA/diagnóstico , Infecciones Oportunistas Relacionadas con el SIDA/tratamiento farmacológico , Infecciones Oportunistas Relacionadas con el SIDA/patología , Síndrome de Inmunodeficiencia Adquirida/tratamiento farmacológico , Anfotericina B/uso terapéutico , Antibacterianos/uso terapéutico , Fármacos Anti-VIH/uso terapéutico , Antifúngicos/uso terapéutico , Antituberculosos/uso terapéutico , Azitromicina/uso terapéutico , Bacteriemia/diagnóstico , Bacteriemia/tratamiento farmacológico , California , Emtricitabina/uso terapéutico , Etambutol/uso terapéutico , Fungemia/diagnóstico , Fungemia/tratamiento farmacológico , Compuestos Heterocíclicos con 3 Anillos/uso terapéutico , Histoplasmosis/diagnóstico , Histoplasmosis/tratamiento farmacológico , Histoplasmosis/patología , Humanos , Pulmón/diagnóstico por imagen , Pulmón/patología , Masculino , Persona de Mediana Edad , Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Infecciones por Mycobacterium no Tuberculosas/tratamiento farmacológico , Infecciones por Mycobacterium no Tuberculosas/patología , Oxazinas , Piperazinas , Piridonas , Rifabutina/uso terapéutico , Tenofovir/uso terapéutico , Tomografía Computarizada por Rayos X
20.
Euro Surveill ; 24(49)2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31822328

RESUMEN

Two cases of presumably airport-acquired falciparum malaria were diagnosed in Frankfurt in October 2019. They were associated with occupation at the airport, and Plasmodium falciparum parasites from their blood showed genetically identical microsatellite and allele patterns. Both had severe malaria. It took more than a week before the diagnosis was made. If symptoms are indicative and there is a plausible exposure, malaria should be considered even if patients have not travelled to an endemic area.


Asunto(s)
Malaria Falciparum/diagnóstico , Plasmodium falciparum/aislamiento & purificación , Adulto , Aeropuertos , Antimaláricos/uso terapéutico , Artesunato/uso terapéutico , Atovacuona/uso terapéutico , Fiebre/etiología , Genotipo , Alemania , Humanos , Malaria Falciparum/sangre , Malaria Falciparum/tratamiento farmacológico , Malaria Falciparum/parasitología , Masculino , Persona de Mediana Edad , Plasmodium falciparum/genética , Reacción en Cadena de la Polimerasa , Proguanil/uso terapéutico , Viaje , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA