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1.
Artigo em Inglês | MEDLINE | ID: mdl-37425493

RESUMO

Background: In the past decade, molecular diagnostic syndromic arrays incorporating a range of bacterial and viral pathogens have been described. It is unclear how paediatric intensive care unit (PICU) staff diagnose lower respiratory tract infection (LRTI) and integrate diagnostic array results into antimicrobial decision-making. Methods: An online survey with eleven questions was distributed throughout paediatric intensive care societies in the UK, continental Europe and Australasia with a total of 755 members. Participants were asked to rate the clinical factors and investigations they used when prescribing for LRTI. Semi-structured interviews were undertaken with staff who participated in a single-centre observational study of a 52-pathogen diagnostic array. Results: Seventy-two survey responses were received; most responses were from senior doctors. Whilst diagnostic arrays were used less frequently than routine investigations (i.e. microbiological culture), they were of comparable perceived utility when making antimicrobial decisions. Prescribers reported that for arrays to be clinically impactful, they would need to deliver results within 6 h for stable patients and within 1 h for unstable patients to inform their immediate decision to prescribe antimicrobials. From 16 staff interviews, we identified that arrays were helpful for the diagnosis and screening of bacterial LRTI. Staff reported it could be challenging to interpret results in some cases due to the high sensitivity of the test. Therefore, results were considered within the context of the patient and discussed within the multidisciplinary team. Conclusions: Diagnostic arrays were considered of comparable value to microbiological investigations by PICU prescribers. Our findings support the need for further clinical and economic evaluation of diagnostic arrays in a randomised control trial. Trial registration: Clinicaltrials.gov, NCT04233268. Registered on 18 January 2020. Supplementary Information: The online version contains supplementary material available at 10.1007/s44253-023-00008-z.

2.
J Craniofac Surg ; 34(1): 53-57, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36608096

RESUMO

PURPOSE: Limited available pediatric plastic surgery positions fail to accommodate the increasing number of craniofacial fellows trained annually. However, many adult indications have increased the demand for craniofacial expertise. Given new opportunities available to craniofacial surgeons, the authors aim to evaluate career prospects for recent craniofacial graduates and explore additional career opportunities. METHODS: Upon approval from the American Society of Craniofacial Surgeons (ASCFS), an anonymous online survey invitation was sent to craniofacial fellows who graduated from 2016 to 2021. Respondents were queried regarding their craniofacial fellowship and subsequent career prospects. RESULTS: A total of 124 eligible participants were identified, of which 30 (24.2%) responded. Craniomaxillofacial case distribution at respondents' current practices varied, with 42.3% reporting a 50% to 75% craniofacial caseload and 38.5% reporting less than 25%. Craniofacial trauma reconstruction was performed most at current positions (92.3%), followed by general reconstruction (92.3%) and breast surgery (69.2%); the least commonly performed was facial feminization (23.1%). Most respondents desired an increased craniomaxillofacial caseload (65.4%). However, 26.9% were unable to secure their current position before fellowship completion, and 80.0% cited limited craniofacial job availability. Recommendations to improve fellowship comprehensiveness and increase candidate competitiveness included increased facial feminization, facial esthetic, and microsurgical experience. CONCLUSION: To adapt to trends in craniomaxillofacial surgery, ASCFS should encourage developing fellowships that increase exposure to gender-affirming, adult craniofacial reconstruction, orthognathic, and skeletal facial esthetic surgery. Expanding training beyond congenital deformities can provide additional employment opportunities while maintaining excellence and innovation in facial plastic surgery.


Assuntos
Internato e Residência , Procedimentos de Cirurgia Plástica , Cirurgia Plástica , Masculino , Adulto , Criança , Humanos , Estados Unidos , Bolsas de Estudo , Feminização , Cirurgia Plástica/educação , Inquéritos e Questionários , Escolha da Profissão
4.
PLOS Glob Public Health ; 2(9): e0000875, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36962870

RESUMO

Sepsis is a major cause of neonatal mortality and children born in low- and middle-income countries (LMICs) are at greater risk of severe neonatal infections than those in higher-income countries. Despite this disparity, there are limited contemporaneous data linking the clinical features of neonatal sepsis with outcome in LMICs. Here, we aimed to identify factors associated with mortality from neonatal sepsis in Vietnam. We conducted a prospective, observational study to describe the clinical features, laboratory characteristics, and mortality rate of neonatal sepsis at a major children's hospital in Ho Chi Minh City. All in-patient neonates clinically diagnosed with probable or culture-confirmed sepsis meeting inclusion criteria from January 2017 to June 2018 were enrolled. We performed univariable analysis and logistic regression to identify factors independently associated with mortality. 524 neonates were recruited. Most cases were defined as late-onset neonatal sepsis and were hospital-acquired (91.4% and 73.3%, respectively). The median (IQR) duration of hospital stay was 23 (13-41) days, 344/524 (65.6%) had a positive blood culture (of which 393 non-contaminant organisms were isolated), and 69/524 (13.2%) patients died. Coagulase-negative staphylococci (232/405; 57.3%), Klebsiella spp. (28/405; 6.9%), and Escherichia coli (27/405; 6.7%) were the most isolated organisms. Sclerema (OR = 11.4), leukopenia <4,000/mm3 (OR = 7.8), thrombocytopenia <100,000/mm3 (OR = 3.7), base excess < -20 mEq/L (OR = 3.6), serum lactate >4 mmol/L (OR = 3.4), extremely low birth weight (OR = 3.2), and hyperglycaemia >180 mg/dL (OR = 2.6) were all significantly (p<0.05) associated with mortality. The identified risk factors can be adopted as prognostic factors for the diagnosis and treatment of neonatal sepsis and enable early risk stratification and interventions appropriate to reduce neonatal sepsis in LMIC settings.

5.
Nat Microbiol ; 6(10): 1271-1278, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34497354

RESUMO

Genomics, combined with population mobility data, used to map importation and spatial spread of SARS-CoV-2 in high-income countries has enabled the implementation of local control measures. Here, to track the spread of SARS-CoV-2 lineages in Bangladesh at the national level, we analysed outbreak trajectory and variant emergence using genomics, Facebook 'Data for Good' and data from three mobile phone operators. We sequenced the complete genomes of 67 SARS-CoV-2 samples (collected by the IEDCR in Bangladesh between March and July 2020) and combined these data with 324 publicly available Global Initiative on Sharing All Influenza Data (GISAID) SARS-CoV-2 genomes from Bangladesh at that time. We found that most (85%) of the sequenced isolates were Pango lineage B.1.1.25 (58%), B.1.1 (19%) or B.1.36 (8%) in early-mid 2020. Bayesian time-scaled phylogenetic analysis predicted that SARS-CoV-2 first emerged during mid-February in Bangladesh, from abroad, with the first case of coronavirus disease 2019 (COVID-19) reported on 8 March 2020. At the end of March 2020, three discrete lineages expanded and spread clonally across Bangladesh. The shifting pattern of viral diversity in Bangladesh, combined with the mobility data, revealed that the mass migration of people from cities to rural areas at the end of March, followed by frequent travel between Dhaka (the capital of Bangladesh) and the rest of the country, disseminated three dominant viral lineages. Further analysis of an additional 85 genomes (November 2020 to April 2021) found that importation of variant of concern Beta (B.1.351) had occurred and that Beta had become dominant in Dhaka. Our interpretation that population mobility out of Dhaka, and travel from urban hotspots to rural areas, disseminated lineages in Bangladesh in the first wave continues to inform government policies to control national case numbers by limiting within-country travel.


Assuntos
COVID-19/transmissão , Telefone Celular/estatística & dados numéricos , Genoma Viral/genética , SARS-CoV-2/genética , Mídias Sociais/estatística & dados numéricos , Bangladesh/epidemiologia , Teorema de Bayes , COVID-19/epidemiologia , COVID-19/prevenção & controle , COVID-19/virologia , Surtos de Doenças/prevenção & controle , Surtos de Doenças/estatística & dados numéricos , Genômica , Política de Saúde/legislação & jurisprudência , Humanos , Filogenia , Dinâmica Populacional/estatística & dados numéricos , SARS-CoV-2/classificação , Viagem/legislação & jurisprudência , Viagem/estatística & dados numéricos
7.
Elife ; 92020 06 19.
Artigo em Inglês | MEDLINE | ID: mdl-32558644

RESUMO

Previously, we showed that 3% (31/1032)of asymptomatic healthcare workers (HCWs) from a large teaching hospital in Cambridge, UK, tested positive for SARS-CoV-2 in April 2020. About 15% (26/169) HCWs with symptoms of coronavirus disease 2019 (COVID-19) also tested positive for SARS-CoV-2 (Rivett et al., 2020). Here, we show that the proportion of both asymptomatic and symptomatic HCWs testing positive for SARS-CoV-2 rapidly declined to near-zero between 25th April and 24th May 2020, corresponding to a decline in patient admissions with COVID-19 during the ongoing UK 'lockdown'. These data demonstrate how infection prevention and control measures including staff testing may help prevent hospitals from becoming independent 'hubs' of SARS-CoV-2 transmission, and illustrate how, with appropriate precautions, organizations in other sectors may be able to resume on-site work safely.


Assuntos
Técnicas de Laboratório Clínico/estatística & dados numéricos , Infecções por Coronavirus/transmissão , Pessoal de Saúde , Programas de Rastreamento/estatística & dados numéricos , Doenças Profissionais/prevenção & controle , Pandemias , Pneumonia Viral/transmissão , Adulto , Doenças Assintomáticas , Betacoronavirus/genética , Betacoronavirus/isolamento & purificação , COVID-19 , Teste para COVID-19 , Infecções Comunitárias Adquiridas/transmissão , Busca de Comunicante , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/prevenção & controle , Transmissão de Doença Infecciosa/prevenção & controle , Inglaterra/epidemiologia , Características da Família , Feminino , Unidades Hospitalares , Hospitais de Ensino/organização & administração , Hospitais de Ensino/estatística & dados numéricos , Hospitais Universitários/organização & administração , Hospitais Universitários/estatística & dados numéricos , Humanos , Controle de Infecções , Transmissão de Doença Infecciosa do Paciente para o Profissional/estatística & dados numéricos , Masculino , Programas de Rastreamento/organização & administração , Pessoa de Meia-Idade , Nasofaringe/virologia , Doenças Profissionais/epidemiologia , Pandemias/prevenção & controle , Admissão do Paciente/estatística & dados numéricos , Pneumonia Viral/diagnóstico , Pneumonia Viral/epidemiologia , Pneumonia Viral/prevenção & controle , Prevalência , Avaliação de Programas e Projetos de Saúde , Reação em Cadeia da Polimerase em Tempo Real , SARS-CoV-2 , Avaliação de Sintomas
8.
BMC Gastroenterol ; 20(1): 127, 2020 Apr 26.
Artigo em Inglês | MEDLINE | ID: mdl-32336287

RESUMO

BACKGROUND: Management of diarrhoea-predominant irritable bowel syndrome (IBS-D) is generally based on patient-reported symptoms; however, limited information on symptom severity exists. The objective of the study was to assess the impact of IBS-D severity on patient burden and patient and healthcare professional attitudes towards IBS. METHODS: We conducted two web-based surveys of healthcare professionals and patients from Australia, Canada and Europe. We analysed patient characteristics and attitudes by IBS-D severity, which was assessed retrospectively using a composite of four variables: worst abdominal pain, IBS symptom frequency, Bristol Stool Form Scale and quality of life. RESULTS: Of 679 healthcare professional respondents, one-third routinely classified patients by severity. The patient survey was completed by 513 patients with mild (26%), moderate (33%) and severe (41%) IBS-D, classified using the composite scale. Age, sex and treatment satisfaction did not change with severity; however, 19% of patients classified with severe IBS-D agreed with the statement: 'When my IBS is bad, I wish I was dead' versus 4 and 7% of patients with mild and moderate IBS-D, respectively (p < 0.05). Significantly more patients classified with severe IBS-D reported medication use versus mild IBS-D. CONCLUSION: Compared with milder symptoms, severe IBS-D was associated with increased medication use and a negative perspective of IBS-D. This highlights the need for a validated severity scale to inform treatment decisions.


Assuntos
Diarreia/diagnóstico , Síndrome do Intestino Irritável/diagnóstico , Índice de Gravidade de Doença , Adulto , Atitude do Pessoal de Saúde , Austrália , Canadá , Efeitos Psicossociais da Doença , Diarreia/tratamento farmacológico , Diarreia/etiologia , Europa (Continente) , Feminino , Pesquisas sobre Atenção à Saúde , Conhecimentos, Atitudes e Prática em Saúde , Inquéritos Epidemiológicos , Humanos , Internet , Síndrome do Intestino Irritável/classificação , Síndrome do Intestino Irritável/complicações , Síndrome do Intestino Irritável/tratamento farmacológico , Masculino , Pessoa de Meia-Idade , Medidas de Resultados Relatados pelo Paciente , Estudos Retrospectivos
9.
Clin Infect Dis ; 69(Suppl 5): S395-S401, 2019 10 15.
Artigo em Inglês | MEDLINE | ID: mdl-31612938

RESUMO

Measuring the burden of typhoid fever and developing effective strategies to reduce it require a surveillance infrastructure that is currently lacking in many endemic countries. Recent efforts and partnerships between local and international researchers have helped to provide new data on the incidence and control of typhoid in parts of Asia and Africa. Here, we highlight examples from India, Nepal, Vietnam, Fiji, Sierra Leone, and Malawi that summarize past and present experiences with the diagnosis, treatment, and prevention of typhoid fever in different locations with endemic disease. While there is no validated road map for the elimination of typhoid, the lessons learned in studying the epidemiology and control of typhoid in these settings can provide insights to guide future disease control efforts.


Assuntos
Efeitos Psicossociais da Doença , Febre Tifoide/diagnóstico , Febre Tifoide/prevenção & controle , África/epidemiologia , Ásia/epidemiologia , Controle de Doenças Transmissíveis , Doenças Endêmicas/prevenção & controle , Monitoramento Epidemiológico , Humanos , Incidência , Salmonella paratyphi A/genética , Salmonella paratyphi A/patogenicidade , Salmonella typhi/genética , Salmonella typhi/patogenicidade , Febre Tifoide/tratamento farmacológico , Febre Tifoide/epidemiologia , Vacinas Tíficas-Paratíficas/administração & dosagem
10.
Clin Infect Dis ; 69(Suppl 6): S417-S421, 2019 10 30.
Artigo em Inglês | MEDLINE | ID: mdl-31665772

RESUMO

BACKGROUND: The World Health Organization now recommends the use of typhoid conjugate vaccines (TCVs) in typhoid-endemic countries, and Gavi, the Vaccine Alliance, added TCVs into the portfolio of subsidized vaccines. Data from the Severe Typhoid Fever in Africa (SETA) program were used to contribute to TCV introduction decision-making processes, exemplified for Ghana and Madagascar. METHODS: Data collected from both countries were evaluated, and barriers to and benefits of introduction scenarios are discussed. No standardized methodological framework was applied. RESULTS: The Ghanaian healthcare system differs from its Malagasy counterpart: Ghana features a functioning insurance system, antimicrobials are available nationwide, and several sites in Ghana deploy blood culture-based typhoid diagnosis. A higher incidence of antimicrobial-resistant Salmonella Typhi is reported in Ghana, which has not been identified as an issue in Madagascar. The Malagasy people have a low expectation of provided healthcare and experience frequent unavailability of medicines, resulting in limited healthcare-seeking behavior and extended consequences of untreated disease. CONCLUSIONS: For Ghana, high typhoid fever incidence coupled with spatiotemporal heterogeneity was observed. A phased TCV introduction through an initial mass campaign in high-risk areas followed by inclusion into routine national immunizations prior to expansion to other areas of the country can be considered. For Madagascar, a national mass campaign followed by routine introduction would be the introduction scenario of choice as it would protect the population, reduce transmission, and prevent an often-deadly disease in a setting characterized by lack of access to healthcare infrastructure. New, easy-to-use diagnostic tools, potentially including environmental surveillance, should be explored and improved to facilitate identification of high-risk areas.


Assuntos
Serviços Preventivos de Saúde/organização & administração , Serviços Preventivos de Saúde/normas , Febre Tifoide/prevenção & controle , Vacinas Tíficas-Paratíficas/administração & dosagem , Tomada de Decisões Gerenciais , Gana , Humanos , Programas de Imunização , Incidência , Madagáscar , Salmonella typhi , Vacinas Tíficas-Paratíficas/economia , Vacinas Conjugadas/administração & dosagem , Organização Mundial da Saúde
11.
PLoS Negl Trop Dis ; 13(7): e0007539, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31314752

RESUMO

Typhoid fever is endemic across sub-Saharan Africa. However, estimates of the burden of typhoid are undermined by insufficient blood volumes and lack of sensitivity of blood culture. Here, we aimed to address this limitation by exploiting pre-enrichment culture followed by PCR, alongside routine blood culture to improve typhoid case detection. We carried out a prospective diagnostic cohort study and enrolled children (aged 0-4 years) with non-specific febrile disease admitted to a tertiary hospital in Blantyre, Malawi from August 2014 to July 2016. Blood was collected for culture (BC) and real-time PCR after a pre-enrichment culture in tryptone soy broth and ox-bile. DNA was subjected to PCR for invA (Pan-Salmonella), staG (S. Typhi), and fliC (S. Typhimurium) genes. A positive PCR was defined as invA plus either staG or fliC (CT<29). IgM and IgG ELISA against four S. Typhi antigens was also performed. In total, 643 children (median age 1.3 years) with nonspecific febrile disease were enrolled; 31 (4.8%) were BC positive for Salmonella (n = 13 S. Typhi, n = 16 S. Typhimurium, and n = 2 S. Enteritidis). Pre-enrichment culture of blood followed by PCR identified a further 8 S. Typhi and 15 S. Typhimurium positive children. IgM and IgG titres to the S. Typhi antigen STY1498 (haemolysin) were significantly higher in children that were PCR positive but blood culture negative compared to febrile children with all other non-typhoid illnesses. The addition of pre-enrichment culture and PCR increased the case ascertainment of invasive Salmonella disease in children by 62-94%. These data support recent burden estimates that highlight the insensitivity of blood cultures and support the targeting of pre-school children for typhoid vaccine prevention in Africa. Blood culture with real-time PCR following pre-enrichment should be used to further refine estimates of vaccine effectiveness in typhoid vaccine trials.


Assuntos
Carga Bacteriana , Efeitos Psicossociais da Doença , Febre/microbiologia , Febre Tifoide/epidemiologia , Antígenos de Bactérias/genética , Hemocultura , Pré-Escolar , Feminino , Febre/epidemiologia , Hospitalização , Humanos , Lactente , Recém-Nascido , Malaui/epidemiologia , Masculino , Estudos Prospectivos , Salmonella typhi/genética , Febre Tifoide/sangue , Febre Tifoide/diagnóstico
13.
Lancet Infect Dis ; 19(1): e26-e30, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30170987

RESUMO

Typhoid fever is an acute systemic infectious disease responsible for an estimated 12-20 million illnesses and over 150 000 deaths annually. In March, 2018, a new recommendation was issued by WHO for the programmatic use of typhoid conjugate vaccines in endemic countries. Health economic analyses of typhoid vaccines have informed funding decisions and national policies regarding vaccine rollout. However, by focusing only on averted typhoid cases and their associated costs, traditional cost-effectiveness analyses might underestimate crucial benefits of typhoid vaccination programmes, because the potential effect of typhoid vaccines on the treatment of patients with non-specific acute febrile illnesses is not considered. For every true case of typhoid fever, three to 25 patients without typhoid disease are treated with antimicrobials unnecessarily, conservatively amounting to more than 50 million prescriptions per year. Antimicrobials for suspected typhoid might therefore be an important selective pressure for the emergence and spread of antimicrobial resistance globally. We propose that large-scale, more aggressive typhoid vaccination programmes-including catch-up campaigns in children up to 15 years of age, and vaccination in lower incidence settings-have the potential to reduce the overuse of antimicrobials and thereby reduce antimicrobial resistance in many bacterial pathogens. Funding bodies and national governments must therefore consider the potential for broad reductions in antimicrobial use and resistance in decisions related to the rollout of typhoid conjugate vaccines.


Assuntos
Farmacorresistência Bacteriana/imunologia , Salmonella typhi/imunologia , Febre Tifoide/epidemiologia , Febre Tifoide/prevenção & controle , Vacinas Tíficas-Paratíficas/imunologia , Vacinação , Vacinas Conjugadas/imunologia , Adolescente , Antibacterianos/efeitos adversos , Antibacterianos/uso terapêutico , Criança , Pré-Escolar , Análise Custo-Benefício , Feminino , Humanos , Incidência , Lactente , Masculino , Febre Tifoide/tratamento farmacológico , Febre Tifoide/microbiologia , Vacinas Tíficas-Paratíficas/efeitos adversos , Vacinas Tíficas-Paratíficas/economia , Vacinas Conjugadas/efeitos adversos , Vacinas Conjugadas/economia
14.
Hum Vaccin Immunother ; 15(6): 1421-1426, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30081708

RESUMO

Invasive non-typhoidal Salmonella (iNTS) disease has emerged as a major public health concern. Yet, understanding of the global burden is incomplete, limited particularly by the breadth of blood culture-based surveillance systems that are able to accurately diagnose the etiology of bacteremia. The accessibility of whole genome sequencing has allowed for genetic characterization of pathogens, shedding light on its evolutionary history and sounding alerts for its future progression. iNTS disease is observed to be a particular threat in sub-Saharan Africa, with a case fatality rate greatly exceeding that of typhoid fever, and commonly affecting infants, young children and immunocompromised adults. While iNTS disease might also be a threat in Asia and Latin America, its burden is not well characterized, primarily owing to the lack of comprehensive reporting in these regions. Drug-resistant Salmonella enterica (S. enterica) serovars (e.g. Typhimurium sequence type 313 (ST313)) have emerged as a potential consequence of sustained antibiotic pressure. Genetic analyses have identified distinguished iNTS disease-causing strains that are particularly virulent in certain human host populations. Effective treatment strategies, including vaccination, are necessary; iNTS vaccines targeting the most common S. enterica serovars, Typhimurium, Enteritidis and Dublin, are currently in early developmental stages. Funding and political support is needed to promote vaccine development and implementation programs to ultimately reduce the threat of iNTS disease in high risk areas.


Assuntos
Bacteriemia/epidemiologia , Efeitos Psicossociais da Doença , Saúde Global , Infecções por Salmonella/epidemiologia , Antibacterianos/farmacologia , Farmacorresistência Bacteriana , Humanos , Hospedeiro Imunocomprometido , Infecções por Salmonella/sangue , Vacinas contra Salmonella/imunologia , Salmonella enterica/efeitos dos fármacos , Salmonella enterica/genética , Vacinação , Sequenciamento Completo do Genoma
15.
Am J Trop Med Hyg ; 99(3_Suppl): 72-78, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30047368

RESUMO

Typhoid fever, caused by Salmonella enterica serovar Typhi (S. Typhi), is a diminishing public health problem in Vietnam, and this process may represent a prototype for typhoid elimination in Asia. Here, we review typhoid epidemiology in Vietnam over 20 years and assess the potential drivers associated with typhoid reduction. In the 1990s, multidrug resistant S. Typhi were highly prevalent in a sentinel hospital in southern Vietnam. A national typhoid incidence rate of 14.7/100,000 population per year was estimated around the new millennium. The Vietnamese government recognized the public health issue of typhoid in the 1990s and initiated vaccine campaigns to protect the most vulnerable members of the population. At their peak, these campaigns immunized approximately 1,200,000 children in 35 provinces. Concurrently, Vietnam experienced unprecedented economic development from 1998 to 2014, with the gross national income per capita increasing from $360 to $1,890 over this period. More recent typhoid incidence data are not available, but surveillance suggests that the current disease burden is negligible. This trajectory can be considered a major public health success. However, a paucity of systematic data makes it difficult to disaggregate the roles of immunization and water, sanitation, and hygiene (WASH) interventions in typhoid reduction in Vietnam. Given the limitations of typhoid vaccines, we surmise the practical elimination of typhoid was largely driven by economic development and improvement in general population living standards. Better designed WASH intervention studies with clinical endpoints and systematic incidence data are essential to glean a greater understanding of contextual factors that impact typhoid incidence reduction.


Assuntos
Antibacterianos/farmacologia , Febre Tifoide/epidemiologia , Febre Tifoide/prevenção & controle , Adolescente , Criança , Pré-Escolar , Genótipo , Humanos , Administração em Saúde Pública , Salmonella typhi/efeitos dos fármacos , Salmonella typhi/genética , Vacinas Tíficas-Paratíficas/imunologia , Vacinação , Vietnã/epidemiologia
16.
Clin Infect Dis ; 67(12): 1824-1830, 2018 11 28.
Artigo em Inglês | MEDLINE | ID: mdl-29746615

RESUMO

Background: The World Health Organization recently prequalified a typhoid conjugate vaccine (TCV), recommending its use in persons ≥6 months to 45 years residing in typhoid fever (TF)-endemic areas. We now need to consider how TCVs can have the greatest impact in the most vulnerable populations. Methods: The Typhoid Fever Surveillance in Africa Program (TSAP) was a blood culture-based surveillance of febrile patients from defined populations presenting at healthcare facilities in 10 African countries. TF and invasive non-typhoidal Salmonella (iNTS) disease incidences were estimated for 0-10 year-olds in one-year age increments. Results: Salmonella Typhi and iNTS were the most frequently isolated pathogens; 135 and 94 cases were identified, respectively. Analysis from three countries was excluded (incomplete person-years of observation (PYO) data). Thirty-seven of 123 TF cases (30.1%) and 71/90 iNTS disease cases (78.9%) occurred in children aged <5 years. No TF and 8/90 iNTS infections (8.9%) were observed in infants aged <9 months. The TF incidences (/100 000 PYO) for children aged <1 year and 1 to <2 years were 5 and 39, respectively; the highest incidence was 304 per 100 000 PYO in 4 to <5 year-olds. The iNTS disease incidence in the defined age groups ranged between 81 and 233 per 100 000 PYO, highest in 1 to <2 year-olds. TF and iNTS disease incidences were higher in West Africa. Conclusions: High burden of TF detected in young children strengthens the need for TCV introduction. Given the concurrent iNTS disease burden, development of a trivalent vaccine against S. Typhi, S. Typhimurium, and S. Enteritidis may be timely in this region.


Assuntos
Febre/microbiologia , Infecções por Salmonella/epidemiologia , Adolescente , Adulto , África Subsaariana/epidemiologia , Criança , Pré-Escolar , Efeitos Psicossociais da Doença , Monitoramento Epidemiológico , Febre/epidemiologia , Humanos , Incidência , Lactente , Recém-Nascido , Salmonella/isolamento & purificação , Infecções por Salmonella/prevenção & controle , Salmonella typhi/isolamento & purificação , Vacinas Tíficas-Paratíficas/uso terapêutico , Vacinas Conjugadas/uso terapêutico , Adulto Jovem
17.
Front Microbiol ; 8: 2031, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29109704

RESUMO

New diagnostic tests for enteric fever are urgently needed to assist with timely antimicrobial treatment of patients and to measure the efficacy of prevention measures such as vaccination. In a novel translational approach, here we use two recently developed controlled human infection models (CHIM) of enteric fever to evaluate an antibody-in-lymphocyte supernatant (ALS) assay, which can detect recent IgA antibody production by circulating B cells in ex vivo mononuclear cell culture. We calculated the discriminative ability of the ALS assay to distinguish diagnosed cases in the two CHIM studies in Oxford, prior to evaluating blood culture-confirmed diagnoses of patients presenting with fever to hospital in an endemic areas of Kathmandu, Nepal. Antibody responses to membrane preparations and lipopolysaccharide provided good sensitivity (>90%) for diagnosing systemic infection after oral challenge with Salmonella Typhi or S. Paratyphi A. Assay specificity was moderate (~60%) due to imperfect sensitivity of blood culture as the reference standard and likely unrecognized subclinical infection. These findings were augmented through the translation of the assay into the endemic setting in Nepal. Anti-MP IgA responses again exhibited good sensitivity (86%) but poor specificity (51%) for detecting blood culture-confirmed enteric fever cases (ROC AUC 0.79, 95%CI 0.70-0.88). Patients with anti-MP IgA ALS titers in the upper quartile exhibited a clinical syndrome synonymous with enteric fever. While better reference standards are need to assess enteric fever diagnostics, routine use of this ALS assay could be used to rule out infection and has the potential to double the laboratory detection rate of enteric fever in this setting over blood culture alone.

18.
J Antimicrob Chemother ; 72(11): 2963-2972, 2017 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-28961709

RESUMO

Southeast Asia, a vibrant region that has recently undergone unprecedented economic development, is regarded as a global hotspot for the emergence and spread of antimicrobial resistance (AMR). Understanding AMR in Southeast Asia is crucial for assessing how to control AMR on an international scale. Here we (i) describe the current AMR situation in Southeast Asia, (ii) explore the mechanisms that make Southeast Asia a focal region for the emergence of AMR, and (iii) propose ways in which Southeast Asia could contribute to a global solution.


Assuntos
Antibacterianos/farmacologia , Bactérias/efeitos dos fármacos , Farmacorresistência Bacteriana , Antibacterianos/administração & dosagem , Antibacterianos/uso terapêutico , Gestão de Antimicrobianos , Sudeste Asiático , Bactérias/patogenicidade , Monitoramento Epidemiológico , Escherichia coli/efeitos dos fármacos , Escherichia coli/patogenicidade , Humanos , Staphylococcus aureus/efeitos dos fármacos , Staphylococcus aureus/patogenicidade
19.
BMJ Open ; 7(6): e016283, 2017 07 02.
Artigo em Inglês | MEDLINE | ID: mdl-28674145

RESUMO

INTRODUCTION: Invasive infections caused by Salmonella enterica serovar Typhi and Paratyphi A are estimated to account for 12-27 million febrile illness episodes worldwide annually. Determining the true burden of typhoidal Salmonellae infections is hindered by lack of population-based studies and adequate laboratory diagnostics.The Strategic Typhoid alliance across Africa and Asia study takes a systematic approach to measuring the age-stratified burden of clinical and subclinical disease caused by typhoidal Salmonellae infections at three high-incidence urban sites in Africa and Asia. We aim to explore the natural history of Salmonella transmission in endemic settings, addressing key uncertainties relating to the epidemiology of enteric fever identified through mathematical models, and enabling optimisation of vaccine strategies. METHODS/DESIGN: Using census-defined denominator populations of ≥100 000 individuals at sites in Malawi, Bangladesh and Nepal, the primary outcome is to characterise the burden of enteric fever in these populations over a 24-month period. During passive surveillance, clinical and household data, and laboratory samples will be collected from febrile individuals. In parallel, healthcare utilisation and water, sanitation and hygiene surveys will be performed to characterise healthcare-seeking behaviour and assess potential routes of transmission. The rates of both undiagnosed and subclinical exposure to typhoidal Salmonellae (seroincidence), identification of chronic carriage and population seroprevalence of typhoid infection will be assessed through age-stratified serosurveys performed at each site. Secondary attack rates will be estimated among household contacts of acute enteric fever cases and possible chronic carriers. ETHICS AND DISSEMINATION: This protocol has been ethically approved by the Oxford Tropical Research Ethics Committee, the icddr,b Institutional Review Board, the Malawian National Health Sciences Research Committee and College of Medicine Research Ethics Committee and Nepal Health Research Council. The study is being conducted in accordance with the principles of the Declaration of Helsinki and Good Clinical Practice. Informed consent was obtained before study enrolment. Results will be submitted to international peer-reviewed journals and presented at international conferences. TRIAL REGISTRATION NUMBER: ISRCTN 12131979. ETHICS REFERENCES: Oxford (Oxford Tropical Research Ethics Committee 39-15).Bangladesh (icddr,b Institutional Review Board PR-15119).Malawi (National Health Sciences Research Committee 15/5/1599).Nepal (Nepal Health Research Council 306/2015).


Assuntos
Portador Sadio/epidemiologia , Censos , Recursos em Saúde/estatística & dados numéricos , Vigilância da População/métodos , Febre Tifoide/epidemiologia , Adolescente , Bangladesh/epidemiologia , Criança , Pré-Escolar , Efeitos Psicossociais da Doença , Feminino , Humanos , Incidência , Lactente , Recém-Nascido , Malaui/epidemiologia , Masculino , Modelos Teóricos , Nepal/epidemiologia , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Projetos de Pesquisa , Estudos Soroepidemiológicos , Inquéritos e Questionários , Febre Tifoide/transmissão
20.
Psychiatr Serv ; 68(9): 975-978, 2017 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-28412892

RESUMO

OBJECTIVE: Fidelity assessments help ensure that evidence-based practices are implemented properly. Although assessments are typically conducted by independent raters, some programs have implemented self-assessments because of resource constraints. Self-assessments were compared with independent assessments of programs implementing individual placement and support supported employment. METHODS: Eleven community-based outpatient programs in New York State completed both self- and independent assessments. Intraclass correlation coefficients and paired t tests were used to compare scores from self- and independent assessments. RESULTS: For both assessment methods, mean scores for all programs were within the range of fair fidelity. Self- and independent assessment total scores were not significantly different; however, significant differences were found on some scale items in this small sample. CONCLUSIONS: Self-assessment may be valid for examining a program's overall functioning and useful when resource constraints prevent independent assessment. Independent assessors may be able to identify nuances, particularly on individual assessment items, that can point to areas for program improvement.


Assuntos
Assistência Ambulatorial/normas , Readaptação ao Emprego/normas , Prática Clínica Baseada em Evidências/normas , Avaliação de Processos e Resultados em Cuidados de Saúde/normas , Avaliação de Programas e Projetos de Saúde/normas , Humanos , New York
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