Spatial analysis of the natural infection index for Triatomines and the risk of Chagas disease transmission in Northeastern Brazil

ABSTRACT This study aimed to analyze the spatial pattern of natural infection index (NII) for triatomines and the risk of Chagas disease transmission in an endemic area of Northeastern Brazil. An ecological study was conducted, based on 184 municipalities in five mesoregions. The NII for triatomines was evaluated in the Pernambuco State, Brazil, from 2016 to 2018. Spatial autocorrelations were evaluated using Global Moran Index (I) and Local Moran Index (II) and were considered positive when I > 0 and p < 0.05, respectively. In total, 7,302 triatomines belonging to seven different species were detected. Triatoma brasiliensis had the highest frequency (53%; n = 3,844), followed by Triatoma pseudomaculata (25%; n = 1,828) and Panstrongylus lutzi (18.5%; n=1,366). The overall NII was 12%, and the higher NII values were P. lutzi (21%) and Panstrongylus megistus (18%). In the mesoregions of Zona da Mata, Agreste, Sertao, and Sertao do Sao Francisco, 93% of triatomines were detected indoors. The global spatial autocorrelation of I to NII was positive (0.2; p = 0.01), and II values calculated using BoxMap, MoranMap, Lisa Cluster Map were statistically significant for natural infections. With regard to the risk areas for the presence of triatomines, Zone 2 (the Agreste and Sertao regions) presented a relative risk of 3.65 compared to other areas in the state. Our study shows the potential areas of vector transmission of Chagas disease. In this study, the application of different methods of spatial analysis made it possible to locate these areas, which would not have been identified by only applying epidemiological indicators.

Mapping the morbidity and mortality of Chagas disease in an endemic area in Brazil

ABSTRACT Chagas disease is among the 21 neglected diseases according to the World Health Organization. This study aimed to investigate the morbidity and mortality distribution of Chagas disease for identifying areas with greater prevalences and deaths of the disease in Northeast Brazil. A population-based ecological study was performed from 2016 to 2018 using data on acute Chagas disease patients from the Disease Notification Information System, chronic cases from the Chagas Disease and the referral Heart Failure Outpatient Clinic in Pernambuco, and Chagas disease-related mortality from the Mortality Information System. The unit of analysis were Pernambuco State mesoregions. The indicators were spatialized into thematic maps on the occurrence and mortality of the disease per 100,000 inhabitants. No cases of acute disease were reported in the period analyzed. Data on 801 chronic Chagas disease patients were analyzed. The population showed an average age of 62 years, with female predominance. The most prevalent comorbidity was systemic arterial hypertension and cardiologic involvement without ventricular dysfunction. The average chronic disease occurrence rate was 3.2/ 100,000 people/ year. As for deaths in the mortality system; in total, 350 deaths were recorded, showing male predominance, age ≥ 60 years, and chronic disease with cardiac involvement as the main mortality cause. The annual average mortality proportion was 1.6/100,000 people. The chronic case distribution showed spatial heterogeneity, with the highest rates of chronic disease and deaths observed in two mesoregions, with the main cause of death being heart-related. This highlights the need for more specialized services in areas with higher burden of the disease to avoid delay in the patients' care.

Identification of nontuberculous mycobacteria species by multiplex real-time PCR with high-resolution melting

Abstract INTRODUCTION: Nontuberculous mycobacteria (NTM) species, as human pathogens, are increasing in the world, as is the difficulty of accurately identifying them. Differential diagnosis, especially between the M. tuberculosis complex and NTM species, and the characterization of NTM species is important. This study aimed to evaluate the performance of a molecular system based on multiplex real-time PCR with high-resolution melting (HRM) for the identification and differentiation of NTM species of clinical importance of an endemic area for tuberculosis in northeastern Brazil. METHODS: The technical protocol of the molecular system was based on multiplex real-time PCR-HRM, and evaluated the sensitivity and specificity of the detection of NTM species in mycobacterial clinical isolates from the studied region. The gold standard method was specific gene sequencing. RESULTS: The sensitivity and specificity of multiplex real-time PCR-HRM modified for differentiation between NTM and M. tuberculosis were 90% and 100%, respectively. The PCR-HRM sensitivities for the characterization of NTM species (M. kansasii, M. abscesses, M. avium, and M. fortuitum) were 94.59%, 80%, 57.14%, and 54%, respectively. CONCLUSIONS The multiplex real-time PCR-HRM modified assay has the potential to rapidly and efficiently identify nontuberculous mycobacteria of clinical importance, which is crucial for immediate implementation of the appropriate therapy and thus avoiding complications and sequelae in patients.

Urine as a promising sample for Leishmania DNA extraction in the diagnosis of visceral leishmaniasis - a review

ABSTRACT Visceral leishmaniasis is a serious and debilitating infection with high fatality rate in tropical and subtropical countries. As clinical symptoms of visceral leishmaniasis are not so specific, confirmatory diagnostic methods with high sensitivity and specificity are needed. Noninvasive methods have been developed using urine as a clinical sample for visceral leishmaniasis diagnosis. In fact, there is a clear correlation between kidney impairment and Leishmania DNA in urine. However, it has been proved that Leishmania nucleic acid may also be isolated from patients without any sign of renal involvement. Even though urine has become a promissing biological sample, it is still not widely used due to several issues, such as (i) incomprehension of the whole renal pathophysiology process in visceral leishmaniasis, (ii) presence of many amplification inhibitors in urine, and (iii) lack of an efficient urinary DNA extraction method. In this article, we performed a literature review to bring a new perspective for Leishmania DNA isolation in urine.

Adequação da investigação dos óbitos infantis no Recife, Pernambuco, Brasil / Evaluation of the adequacy of information from research on infant mortality in Recife, Pernambuco, Brazil

Resumo Avaliou-se a adequação da investigação do óbito infantil no Recife-PE, Brasil. Estudo transversal com 120 variáveis da ficha de investigação, agrupadas em seis dimensões (pré-natal; parto e nascimento; puericultura; características da família; ocorrência do óbito; e conclusão e recomendações), ponderadas pela técnica de consenso e analisadas quanto ao preenchimento. A investigação foi classificada (adequada, parcialmente adequada e inadequada) segundo um indicador composto de avaliação (ICA). Houve dissenso em 11 variáveis (9, na dimensão pré-natal; 1, no parto e nascimento; 1, na conclusões e recomendações). Dos 568 óbitos estudados, 56,2% apresentam investigação adequada. A ocorrência do óbito foi a dimensão melhor avaliada, e pré-natal, a mais deficiente. A elaboração do ICA possibilita aos profissionais e gestores das políticas de saúde da criança, identificar os pontos de estrangulamento da investigação dos óbitos infantis para um melhor direcionamento das ações e contribui com a reflexão sobre esta vigilância em outros municípios e estados.

Abstract This study is an evaluation of infant death research in Recife, Pernambuco (PE). It is a cross-sectional study with 120 variables grouped into six dimensions (prenatal, birth, child care, family characteristics, occurrence of death, and conclusion and recommendations), weighted by consensus technique. The research was classifiedas adequate, partially adequate or inadequate according to a composite indicator assessment (ICA). There was dissension on 11 variables (9 in prenatal dimension, one in labor and birth, and 1 in the conclusions and recommendations). Of the 568 deaths studied, 56.2% have adequate research. The occurrence of death was the best-evaluated dimension and prenatal the poorest. The preparation of the ICA enables professionals and managers of child health policies to identify bottlenecks in the investigation of infant deaths for better targeting of actions, and contributing to the discussion about surveillance in other cities and states.

Assessment of infant mortality surveillance: case study / Avaliação da vigilância do óbito infantil: estudo de caso

Abstract Objectives: assess the implementation of child mortality surveillance in Recife/PE. Methods: an analytical evaluative study was conducted on its implementation. It was a single-case study that correlated degree of implementation with the of the result indicators surveillance. A logic model on this strategy and a matrix of indicators and judgments according to model components were drawn up. The degree of implementation was obtained from structure and process indicators and this was then correlated with result indicators, in a deductive approach based on intervention theory. Results: the structure approach presented superior results to the process in all evaluated components. This strategy was considered to have been partially implemented (75. 7%), however, the components of 'identification of deaths' (85.7%), 'epidemiological research' (88.1%) and 'referral of proposals for promotion and health care and correction of official statistics' (95.8%) were classified implemented. Regarding the relation of the degree of implantation of the surveillance and its results with the logical model, only one of the 17 indicators was considered inconsistent. Conclusions: this strategy was considered to have been partially implemented. The model of child mortality surveillance and its assessment were shown to be adequate for signaling the consistency of the interrelations between the activities proposed and the effects expected, and would be reproducible within other scenarios.

Resumo Objetivos: avaliar a implantação da vigilância do óbito infantil no Recife/PE. Métodos: realizou-se pesquisa avaliativa do tipo análise de implantação da vigilância do óbito infantil. Estudo de caso único que relacionou o grau de implantação aos indicadores de resultados da estratégia. Foi elaborado um modelo lógico da intervenção e uma matriz de indicadores e julgamento por componente do modelo. O grau de implantação foi obtido a partir de indicadores de estrutura e processo e, posteriormente, relacionado aos de resultado, em uma abordagem dedutiva baseada na teoria da intervenção. Resultados: a abordagem estrutura apresentou resultados superiores ao processo em todos os componentes. A vigilância do óbito infantil foi considerada parcialmente implantada (75,7%), entretanto, os componentes 'identificação dos óbitos' (85,7%), 'investigação epidemiológica' (88,1%) e 'encaminhamento das propostas de promoção e atenção à saúde e correção das estatísticas oficiais' (95,8%) foram julgados implantados. Quanto à relação do grau de implantação da intervenção e seus resultados com o modelo lógico, apenas um dos 17 indicadores foi considerado inconsistente. Conclusões: a vigilância do óbito infantil foi classificada como parcialmente implantada. O modelo desta estratégia e a sua avaliação mostraram-se adequados ao assinalar a consistência das inter-relações entre as atividades propostas e os efeitos esperados, passíveis de reprodutibilidade em outros cenários.

Fatores associados ao aumento da vulnerabilidade de participantes de pesquisa / Factors linked to the increased vulnerability of research subjects / Factores asociados al aumento de la vulnerabilidad de los participantes de la investigación

Resumo Trata-se de estudo de corte transversal cujo objetivo foi avaliar a prevalência de fatores associados ao aumento da vulnerabilidade de participantes de pesquisas. Foram entrevistados 116 pacientes e 18 médicos. Entre os pacientes, 15% eram analfabetos, 27% desconheciam o motivo do seu internamento e 45% não sabiam qual tratamento estavam recebendo. Do total da amostra, 43% procediam de zona rural e 70% haviam cursado, no máximo, ensino fundamental, fatores que tornam essa população especialmente vulnerável. Os percentuais de acerto em questões relacionadas à compreensão do termo de consentimento livre e esclarecido e de prescrição médica foram, respectivamente, 12% e 7%. Entre os médicos, 44% não conheciam todas as pesquisas realizadas na enfermaria pela qual eram responsáveis e 17% afirmaram que a permanência hospitalar de pacientes que participam de pesquisas é maior. É elevada a prevalência de fatores que aumentam a vulnerabilidade de participantes em pesquisas médicas.

Abstract A cross-sectional study was carried out that aimed to assess the prevalence of factors associated with the increased vulnerability of research subjects. A total of 116 patients and 18 doctors were interviewed. A proportion of 15% of patients were illiterate, 27% did not know the reason for their hospitalization and 45% did not know what treatment they were receiving. Of the total sample, 43% were from rural areas and 70% had at most an elementary level education, factors that make this population especially vulnerable. The percentage of correct answers on issues related to the understanding of free and informed consent and prescriptions were 12% and 7%, respectively. Among the doctors, 44% were not aware of all the research projects being carried out in the ward for which they were responsible, and 17% said that the hospital stays of patients participating in research were longer. The prevalence of factors that increased the vulnerability of subjects in medical research was high.

Se trata de un estudio de corte transversal que tuvo como objetivo evaluar la prevalencia de los factores asociados con el aumento de vulnerabilidad de los participantes de investigación. Fueron entrevistados 116 pacientes y 18 médicos. Entre los pacientes, el 15% eran analfabetos, el 27% desconocía el motivo de su hospitalización y el 45% no sabía qué tratamiento estaba recibiendo. Del total de la muestra, el 43% era de zonas rurales, y el 70% había cursado, como máximo, la educación básica, factores que tornan a esta población especialmente vulnerable. El porcentaje de respuestas correctas en cuestiones relacionadas con la comprensión del consentimiento libre e informado y de la prescripción médica fue de, respectivamente, 12% y 7%. Entre los médicos, el 44% no conocía todas las investigaciones realizadas en la enfermería de la cual eran responsables y el 17% afirmó que la permanencia hospitalaria de los pacientes que participan de investigaciones es mayor. Es elevada la prevalencia de factores que aumentan la vulnerabilidad de los participantes en investigaciones médicas.

Knowledge, attitudes and perceptions regarding lymphatic filariasis: study on systematic noncompliance with mass drug administration

ABSTRACT The aim of this study was to investigate the epidemiological characteristics, antigenic profile, perceptions, attitudes and practices of individuals who have been systematically non-compliant in mass drug administration (MDA) campaigns targeting lymphatic filariasis, in the municipality of Olinda, State of Pernambuco, Northeastern Brazil. A pretested questionnaire was used to obtain information on socioenvironmental demographics, perceptions of lymphatic filariasis and MDA, and reasons for systematic noncompliance with treatment. A rapid immunochromatographic test (ICT) was performed during the survey to screen for filariasis. It was found that the survey subjects knew about filariasis and MDA. Filariasis was identified as a disease (86.2%) and 74.4% associated it with the presence of swelling in the legs. About 80% knew about MDA, and the main source of information was healthcare workers (68.3%). For men the main reasons for systematic noncompliance with MDA were that “the individual had not received the medication” (p=0.03) and for women “the individual either feared experiencing adverse reactions”. According to the ICT, the prevalence of lymphatic filariasis was 2%. The most important causes of systematic noncompliance were not receiving the drug and fear of side-effects. For successful implementation of MDA programs, good planning, educational campaigns promoting the benefits of MDA, adoption of measures to minimize the impact of adverse effects and improvement of drug distribution logistics are needed.

Mortalidade infantil: tendência temporal e contribuição da vigilância do óbito / Infant mortality: temporal trend and contribution of death surveillance

Resumo Objetivo Analisar a tendência temporal da mortalidade infantil na cidade de Recife, Pernambuco, Brasil e avaliar a contribuição da vigilância do óbito como instrumento para aprimoramento das estatísticas vitais e planejamento de ações. Métodos Foram calculados os coeficientes de mortalidade infantil, neonatal e pós-neonatal para o período de 1980 a 2012. Utilizou-se o modelo de regressão exponencial para análise da tendência. Para avaliar a contribuição da vigilância do óbito infantil foi realizado um estudo sobre as variáveis, causas básicas e associadas da Declaração de Óbito, e da evitabilidade. Resultados A tendência do coeficiente de mortalidade infantil e seus componentes etários foram decrescentes. Após a investigação da vigilância do óbito infantil nenhuma variável da Declaração de Óbito ficou incompleta e, em 52% dos óbitos, a causa básica foi melhor definida. Quase 80% dos óbitos foram classificados como evitáveis e 51,3% reduzíveis por adequada atenção à mulher na gestação. Conclusão A mortalidade infantil apresentou tendência decrescente e a vigilância do óbito infantil contribuiu para aprimorar as estatísticas vitais, fundamental para o planejamento das ações de saúde materno-infantil.

Abstract Objective To analyze the temporal trend in infant mortality in the city of Recife, state of Pernambuco, Brazil and evaluate the contribution of death surveillance as an instrument for improving vital statistics and action planning. Methods Infant, neonatal, and post-neonatal mortality rates were calculated from 1980 to 2012. An exponential regression model was used for trend analysis. A study on the variables, the basic and associated causes of death certificates, and avoidability was conducted to evaluate the contribution of infant death surveillance. Results The trend in infant mortality rate and its age components was shown to be decreasing. After research on infant death surveillance, no death certificate variable remained incomplete, and the underlying cause of death was better determined in 52% of deaths. Almost 80% of deaths were classified as preventable, and 51.3% were classified as reducible by appropriate care provided to women during their pregnancy. Conclusion Infant mortality presented a decreasing trend, and infant death surveillance contributed to improve vital statistics, which are essential for maternal-infant health planning actions.

Serviço de referência nacional em filarioses: acreditação e garantia da qualidade / National centre of lymphatic filariasis: accreditation and quality assurance

O Serviço de Referência Nacional em Filarioses (SRNF) do Centro de Pesquisas Aggeu Magalhães, Fiocruz, desenvolve atividades multi e interdisciplinares no controle e eliminação da filariose bancroftiana. A fim de melhorar a qualidade dos serviços oferecidos e a segurança do paciente, foi implantado um sistema de qualidade baseado nos padrões de qualidade propostos pela Joint Commission International (JCI). Esta nota tem como objetivo descrever a implantação do programa de cuidados ambulatoriais na referida unidade para outorga da certificação. O processo foi iniciado com um estudo minucioso do Manual de Cuidados Ambulatoriais, realizando-se, em seguida, a elaboração da documentação pertinente, a conscientização e capacitação dos recursos humanos, a adequação física das instalações e, posteriormente, a avaliação externa pela equipe de auditores do JCI. A instituição do novo sistema de qualidade evidenciou que o comprometimento da gestão e de toda a equipe foi, sem dúvida, o elemento mais importante para o alcance das metas e sucesso das ações. Este processo viabilizou avanços efetivos na melhoria da qualidade dos serviços prestados e da segurança do paciente, não somente no SRNF como em toda a instituição na qual ele se encontra inserido.

Análise espacial da mortalidade infantil e adequação das informações vitais: uma proposta para definição de áreas prioritárias / Spatial analysis of infant mortality and the adequacy of vital information: a proposal for defining priority areas

Estudo ecológico que objetivou analisar a relação entre o comportamento espacial da mortalidade infantil e a adequação das informações vitais. Para avaliar a adequação das informações sobre nascimentos (Sinasc) e óbitos (SIM) do Ministério da Saúde foi utilizado um método, já validado, que é constituído por cinco indicadores calculados por município, segundo o porte populacional. Os municípios foram classificados em: informações vitais consolidadas, em fase de consolidação ou não consolidadas. Na análise espacial, foram gerados os Polígonos de Voronoi para minimizar os problemas de proximidade entre os municípios, e o índice de Moran local para identificação dos agregados espaciais de mortalidade infantil. Identificou-se que 76,6% dos municípios apresentaram informações vitais consolidadas. Houve formação de cluster para a mortalidade infantil em 34 municípios, formando três agregados espaciais. Verificou-se associação entre a adequação das informações vitais e o comportamento espacial da mortalidade infantil. As técnicas de geoestatística foram preditivas na identificação de agregados espaciais com informações vitais consolidadas. A proposta contribuirá para a melhoria da qualidade da informação e o planejamento de ações visando à redução da mortalidade infantil.

This is an ecological study that sought to assess the relationship between the spatial clustering of infant mortality and the adequacy of vital information. The adequacy of information from the Brazilian Live Birth Database (SINASC) and Mortality Database (SIM) were examined using a validated method that uses five indicators calculated by municipality and population size. Municipalities were classified as either having consolidated data, data currently being consolidated, or not having consolidated data. Voronoi polygons were generated for spatial analysis in order to minimize any proximity issues among municipalities. The local Moran index was applied to identify spatial clustering of infant mortality. It was established that 76.2% of all municipalities had consolidated vital data. Infant mortality clustering was seen in 34 municipalities comprising three spatial clusters. An association was also found between the adequacy of vital information and the spatial clustering of infant mortality. Geostatistical techniques proved to have predictive power to identify spatial clustering with consolidated vital information. The approach will contribute to the improvement of data quality and can be used for planning actions seeking to reduce infant mortality.

Evaluation of diagnostic tests for Wuchereria bancrofti infection in Brazilian schoolchildren

Introduction Since the launch of the Global Programme to Eliminate Lymphatic Filariasis, more than 70% of the endemic countries have implemented mass drug administration (MDA) to interrupt disease transmission. The monitoring of filarial infection in sentinel populations, particularly schoolchildren, is recommended to assess the impact of MDA. A key issue is choosing the appropriate tools for these initial assessments (to define the best intervention) and for monitoring transmission. Methods This study compared the pre-MDA performance of five diagnostic methods, namely, thick film test, Knott's technique, filtration, Og4C3-ELISA, and the AD12-ICT card test, in schoolchildren from Brazil. Venous and capillary blood samples were collected between 11 pm and 1 am. The microfilarial loads were analyzed with a negative binomial regression, and the prevalence and associated 95% confidence intervals were estimated for all methods. The accuracies of the AD12-ICT card and Og4C3-ELISA tests were assessed against the combination of parasitological test results. Results A total of 805 schoolchildren were examined. The overall and stratified prevalence by age group and gender detected by Og4C3-ELISA and AD12-ICT were markedly higher than the prevalence estimated by the parasitological methods. The sensitivity of the AD12-ICT card and Og4C3-ELISA tests was approximately 100%, and the positive likelihood ratios were above 6. The specificity of the Og4C3-ELISA was higher than that of the AD12-ICT at different prevalence levels. Conclusions The ICT card test should be the recommended tool for monitoring school-age populations living in areas with ongoing or completed MDA. .

A comparison of four DNA extraction protocols for the analysis of urine from patients with visceral leishmaniasis

Introduction Polymerase chain reaction (PCR) may offer an alternative diagnostic option when clinical signs and symptoms suggest visceral leishmaniasis (VL) but microscopic scanning and serological tests provide negative results. PCR using urine is sensitive enough to diagnose human visceral leishmaniasis (VL). However, DNA quality is a crucial factor for successful amplification. Methods A comparative performance evaluation of DNA extraction methods from the urine of patients with VL using two commercially available extraction kits and two phenol-chloroform protocols was conducted to determine which method produces the highest quality DNA suitable for PCR amplification, as well as the most sensitive, fast and inexpensive method. All commercially available kits were able to shorten the duration of DNA extraction. Results With regard to detection limits, both phenol: chloroform extraction and the QIAamp DNA Mini Kit provided good results (0.1 pg of DNA) for the extraction of DNA from a parasite smaller than Leishmania (Leishmania) infantum (< 100fg of DNA). However, among 11 urine samples from subjects with VL, better performance was achieved with the phenol:chloroform method (8/11) relative to the QIAamp DNA Mini Kit (4/11), with a greater number of positive samples detected at a lower cost using PCR. Conclusion Our results demonstrate that phenol:chloroform with an ethanol precipitation prior to extraction is the most efficient method in terms of yield and cost, using urine as a non-invasive source of DNA and providing an alternative diagnostic method at a low cost. .

Perfil epidemiológico de pacientes atendidos no ambulatório do serviço de referência nacional em filarioses do Centro de Pesquisas Aggeu Magalhães, Recife-PE / Epidemiological profile of patients seen at in the outpatient National Reference Service for Filariasis, of Aggeu Magalhães Research Center, Recife-PE

Este trabalho descreve o perfil epidemiológico dos pacientes atendidos no ambulatório do Serviçode Referência Nacional em Filarioses (SRNF), onde são desenvolvidas atividades clínicas,epidemiológicas e laboratoriais relacionadas à pesquisa e assistência aos pacientes acometidos porfilarioses. As informações foram obtidas de 1.109 prontuários de pacientes atendidos no período deseis anos. Do total de prontuários analisados, foi observado que 62,8 por cento dos indivíduos atendidoseram do gênero masculino e que 85,4 por cento eram residentes na Região Metropolitana do Recife (RMR).A frequência de indivíduos encaminhados ao SRNF que se apresentavam microfilarêmicos e/ouantígenos positivos para filariose bancroftiana foi de 55 por cento. Tal resultado foi considerado baixo umavez que esses indivíduos apresentavam forte indicativo clínico ou epidemiológico para infecçãofilarial. Esta informação evidencia a necessidade de um esforço maior no estabelecimento deparâmetros que determinem o fluxo de encaminhamento dos pacientes ao SRNF, de modo que seevite demanda desnecessária e sejam otimizados os recursos.

This paper describes the epidemiological profile of patients attending the outpatient clinic of theDepartment of the National Reference Service for Filariasis (SRNF), where clinical, epidemiological and laboratory activities are carried out relating to research, care, investigation and monitoring of patients suffering from filariasis. Information was obtained from the medical records of 1,109patients treated over a six year period. It was observed that most of the subjects attending came fromof the Metropolitan Region of Recife (RMR) - 85.4 per cent, –most of whom (62.8 per cent.) were male. A lowfrequency of individuals referred to SRNF showed microfilariae or antigen positivity for lymphaticfilariasis (55 per cent), although these patients represent strong evidence for clinical or epidemiologicalfilarial infection. This information makes clear the need for a greater effort to establish parameters that determine the flow of referral of patients to SRNF, avoiding unnecessary demand and allowing optimization of resources.

Candida famata-induced fulminating cholecystitis

Lithiasic cholecystitis is classically associated with the presence of enterobacteria, such as Escherichia coli, Enterococcus, Klebsiella, and Enterobacter, in the gallbladder. Cholecystitis associated with fungal infections is a rare event related to underlying conditions such as diabetes mellitus, steroid use, and broad-spectrum antibiotic use for prolonged periods, as well as pancreatitis and surgery of the digestive tract. Here, we present the first reported case of a gallbladder infection caused by Candida famata.

Case study of appatient with hiv-aids and visceal leishmaniasis co-infection iin multiple episodes / Estudo de caso de paciente com multiplos episodios da coinfeccao HIV-AIDS e leishmaniose visceral

SUMMARY Report of a 45-year-old male farmer, a resident in the forest zone of Pernambuco, who was diagnosed with human immunodeficiency virus (HIV) in 1999 and treated using antiretroviral (ARV) drugs. In 2005, the first episode of visceral leishmaniasis (VL), as assessed by parasitological diagnosis of bone marrow aspirate, was recorded. When admitted to the hospital, the patient presented fever, hepatosplenomegaly, weight loss, and diarrhea. Since then, six additional episodes of VL occurred, with a frequency rate of one per year (2005-2012, except in 2008). In 2011, the patient presented a disseminated skin lesion caused by the amastigotes of Leishmania, as identified by histopathological assessment of skin biopsy samples. In 2005, he was treated with N-methyl-glucamine-antimony and amphotericin B deoxycholate. However, since 2006 because of a reported toxicity, the drug of choice was liposomal amphotericin B. As recommended by the Ministry of Health, this report emphasizes the need for HIV patients living in VL endemic areas to include this parasitosis in their follow-up protocol, particularly after the first infection of VL. .

RESUMO Relato de caso de paciente masculino de 45 anos, agricultor, residente na zona da mata do Estado de Pernambuco, diagnosticado com HIV em 1999 e em uso de ARV. Em 2005 foi registrada a primeira ocorrência de LV através do diagnóstico parasitológico a partir do aspirado da medula óssea. À admissão no hospital apresentava-se com febre, hepatoesplenomegalia, perda de peso e diarréia. Desde então houve a ocorrência de mais sete episódios de LV, tendo ocorrido em media, um evento a cada ano (2005-2012 exceto em 2008). O paciente apresentou, em 2011, um quadro cutâneo disseminado, sendo realizada biopsia de pele que evidenciou formas amastigotas de Leishmania no exame histopatológico. Em 2005, o tratamento foi realizado com antimoniato de N-metil-glucamina e anfotericina B desoxicolato, mas desde 2006, devido à toxicidade, o medicamento de escolha foi a anfotericina B lipossomal. Como recomendado pelo Ministério da Saúde, esse relato reforça a necessidade de que os casos de HIV residentes em área endêmica de LV deverão ter inserido em seu protocolo de acompanhamento essa parasitose, principalmente após o primeiro episódio. .

Using spatial analysis to identify areas vulnerable to infant mortality / Uso del análisis espacial para determinar las zonas vulnerables a la mortalidad en lactantes

OBJECTIVE: To analyze the spatial distribution of infant mortality and identify clusters with high risk of death in the first year of life. METHODS: The Thiessen (Voronoi) polygon method was used to analyze spatial distribution of the infant mortality rate, calculated by municipality. The triennium 2006 - 2008 was used as a reference to estimate the average infant mortality rate, and the first analysis of the spatial distribution of the rate was performed to test for first-order spatial stationarity. The spatial pattern was then analyzed using Moran's index and G-statistic (α = 5%). RESULTS: The surface projections on trends showed that infant mortality is not constant in space. The Moran index (0.34, P < 0.01) and G-statistic (0.03, P < 0.01) confirmed a spatial autocorrelation between infant mortality and clusters when the Thiessen polygon method was used. CONCLUSIONS: The Voronoi polygons proved accurate for spatial analysis of infant mortality and were predictive of clusters with high risk of death in the first year of life.

OBJETIVO: Analizar la distribución espacial de la mortalidad en lactantes y determinar los agrupamientos con alto riesgo de muerte en el primer año de vida. MÉTODOS: Se usó el método de los polígonos de Thiessen (Voronoi) para analizar la distribución espacial de la tasa de mortalidad en lactantes, calculada por municipios. Se adoptó como referencia el trienio del 2006 al 2008 para calcular la tasa promedio de mortalidad en lactantes, y se llevó a cabo el primer análisis de la distribución espacial de la tasa con objeto de someterla a prueba en cuanto a estacionariedad espacial de primer orden. A continuación se analizó el modelo espacial usando el índice de Moran y la estadística G (α = 5%). RESULTADOS: Las proyecciones de superficie de tendencias indicaron que la mortalidad en lactantes no es constante en el espacio. El índice de Moran (0,34, P < 0,01) y la estadística G (0,03, P < 0,01) confirmaron una autocorrelación espacial entre la mortalidad en lactantes y los agrupamientos cuando se utilizó el método de los polígonos de Thiessen. CONCLUSIONES: Los polígonos de Voronoi mostraron precisión en el análisis espacial de la mortalidad en lactantes y fueron predictivos de los agrupamientos con alto riesgo de muerte en el primer año de vida.

Avaliação epidemiológica de doenças negligenciadas em escolares: filariose linfática e parasitoses intestinais / Epidemiological assessment of neglected diseases in children: lymphatic filariasis and soil-transmitted helminthiasis

OBJETIVO: Descrever a prevalência de infecção filarial e de parasitoses intestinais em escolares numa área endêmica de filariose e refletir sobre a opção terapêutica utilizada no Brasil no tratamento coletivo para filariose. MÉTODOS: Estudo transversal envolvendo 508 alunos na faixa etária de 5-18 anos cadastrados em escolas públicas do município de Olinda-PE. Realizou-se a investigação da parasitose intestinal em três amostras de fezes, analisadas pelo método de Hoffmann, Pons e Janer. A investigação filarial foi feita com teste antigênico pela técnica de imunocromatográfica rápida (ICT) e pesquisa de microfilárias, utilizando filtração em membrana de policarbonato. Para análise de dados utilizou-se a estatística descritiva através do programa EpiInfo versão 7. RESULTADOS: A prevalência de filariose por ICT foi de 13,8% e por microfilaremia de 1,2%, enquanto a de parasitoses intestinais foi 64,2%. A concomitância do diagnóstico filarial e de parasitoses intestinais foi de 9,4% e, 31,5% eram isentos de ambas as parasitoses. Entre os indivíduos com parasitoses intestinais, 55% eram monoparasitados e 45% poliparasitados. A presença de geohelmintos ocorreu em 72,5% dos parasitados. No grupo com infecção filarial a ocorrência de geohelmintíase foi de 54,5%. CONCLUSÕES: O diagnóstico simultâneo de infecção filarial e parasitose intestinal, bem como a elevada frequência de geohelmintos justificam uma reavaliação da estratégia terapêutica do tratamento coletivo no programa de filariose no Brasil.

OBJECTIVE: To report the prevalence of lymphatic filariasis and intestinal parasitic infections in school-aged children living in a filariasis endemic area and discuss about the therapeutic regimen adopted in Brazil for the large-scale treatment of filariasis. METHODS: A cross-sectional study including 508 students aged 5-18 years old, enrolled in public schools within the city of Olinda, Pernambuco. The presence of intestinal parasites was analyzed using the Hoffman, Pons and Janer method on 3 stool samples. The diagnosis of filarial infection was performed using the rapid immunochromatographic technique (ICT) for the antigen, and the polycarbonate membrane filtration for the presence of microfilariae. Descriptive statistics of the data was performed using EpiInfo version 7. RESULTS: The prevalence of filariasis was 13.8% by ICT and 1.2% by microfilaraemia, while intestinal parasites were detected in 64.2% of cases. Concurrent diagnosis of filariasis and intestinal parasites was 9.4%, while 31.5% of students were parasite-free. Among individuals with intestinal parasites, 55% had one parasite and 45% had more than one parasite. Geohelminths occurred in 72.5% of the parasited individuals. In the group with filarial infection the prevalence of soil-transmitted helminthiasis was 54.5%. CONCLUSIONS: The simultaneous diagnosis of filariasis and intestinal parasites as well as the high frequency of geohelminths justify the need to reevaluate the treatment strategy used in the Brazilian filariasis large-scale treatment program.

Adverse reactions following mass drug administration with diethylcarbamazine in lymphatic filariasis endemic areas in the Northeast of Brazil / Reações adversas após tratamento em massa com dietilcarbamazina em áreas endêmicas de filariose linfática no nordeste do Brasil

INTRODUCTION: The Global Programme to Eliminate Lymphatic Filariasis was launched with the goal of eliminating this disease via the annual mass drug administration (MDA) of a single dose of antifilarial drugs. Adverse drug reactions following MDA are a major factor of poor treatment adherence in several countries. This study assessed the occurrence of adverse drug reactions (ADRs) following the first round of mass treatment in two communities treated with different dosages of diethylcarbamazine (DEC) in the City of Recife, Brazil. METHODS: Population-based cross-sectional surveys were conducted in a random sample of the population living in both communities (Areas I and II). The dose of DEC recommended by the WHO (6mg/kg) was calculated based on the individual's weight-for-age. In Area II, weight differences between the genders were also considered when determining dosage. Data were obtained through interviews conducted in the first 12 to 48h and on the 5th day after MDA during household visits. RESULTS: A total of 487 and 365 individuals were interviewed in Areas I and II, respectively. The prevalence of ADRs in Area I (23.6; 95%CI: 19.1-29.5) was higher than in Area II (16.2; 95%CI:11.9-21.5)(p=0.0078). The prevalence of ADRs among females was higher than in males in Area I (p=0.0021). In Area II, no significant difference between the genders was observed (p=0.1840). Age was not associated with ADRs in either area. CONCLUSIONS: Adjusting MDA dosage schedules according to weight-for-age and sex may be may contribute to reduce the occurrence of adverse drug reactions in the population.

INTRODUÇÃO: O Programa Global de Eliminação da Filariose Linfática foi lançado visando à eliminação da doença pela administração de medicamentos em massa (MDA). As reações adversas seguidas ao MDA são um importante fator de baixa adesão ao tratamento em vários países. Este estudo avaliou a ocorrência de reações adversas medicamentosas (ADRs) após a primeira dose de tratamento em massa em duas comunidades tratadas com diferentes doses de dietilcarbamazina (DEC), na Cidade de Recife, Brasil. MÉTODOS: Estudos transversais foram realizados em uma amostra aleatória da população de duas áreas (Áreas I e II). A dose de DEC recomendada pela OMS (6mg/kg) foi calculada com base em parâmetros populacionais de peso para a idade. Na Área II, diferenças de peso entre os sexos também foram consideradas no cálculo. Dados foram obtidos através de entrevistas nas primeiras 12 às 48h e 5º dia após o tratamento durante visitas domiciliares. RESULTADOS: Um total de 487 e 365 pessoas foi entrevistado nas Áreas I e II, respectivamente. A prevalência de ADRs na Área I (23,6; IC95%: 19,1-29,5) foi maior do que na Área II (16,2; IC 95%:11,9-21,5)(p=0,0078). Na Área I, a prevalência de ADRs foi maior nas mulheres do que nos homens (p=0,0021), não se observando diferença na Área II (p=0,1840). Idade não esteve associada à ADRs. CONCLUSÕES: Doses de tratamento em massa (MDA) ajustadas por peso para a idade e sexo parecem contribuir para redução da ocorrência de ADRs na população.

Diferenciais na adequação das informações de eventos vitais nos municípios de Pernambuco, 2006-2008 / Differentials in vital information in the state of Pernambuco, Brazil, 2006-2008

OBJETIVO: Avaliar os diferenciais da adequação das informações de nascimentos e óbitos do Ministério da Saúde para o cálculo da mortalidade infantil nos municípios do Estado de Pernambuco, 2006-2008. MÉTODOS: Estudo ecológico, cujas fontes de dados foram os sistemas de informação sobre nascidos vivos e mortalidade. Foram utilizados os indicadores: coeficiente de mortalidade geral padronizado por idade, desvio médio relativo do coeficiente de mortalidade geral, razão entre nascidos vivos informados e estimados, desvio médio relativo da taxa de natalidade e proporção de óbitos sem definição de causa básica. Estes indicadores foram agregados em três dimensões: mortalidade, natalidade e mal definidos. Utilizando critérios pré-estabelecidos, os municípios foram classificados como: informações vitais consolidadas, em fase de consolidação e não consolidadas. Os dados foram analisados através do programa Epiinfo e do Terraview para elaboração dos mapas. RESULTADOS: Dos 185 municípios do Estado, 141 (76,2%) foram classificados como informações vitais consolidadas, agregando aproximadamente 85% da população residente e 17 (9,2%) como não consolidadas, categoria na qual reside apenas 4,9% da população. Os municípios com 50.000 habitantes ou mais têm informações de melhor qualidade. CONCLUSÃO: O método utilizado mostrou-se potencial para classificar a qualidade das informações vitais em Pernambuco, identificando as desigualdades, que se constituem em desafios para o Estado, no sentido de possibilitar a análise destas informações a partir de dados diretos dos sistemas no âmbito municipal. Apenas dessa forma torna-se possível avaliar os investimentos realizados para a redução da mortalidade infantil em Pernambuco de forma realística.

OBJECTIVE: To assess differentials in official birth and death data for estimating infant mortality. METHODS: An ecological study was conducted based on data obtained from birth and death information systems in the state of Pernambuco, northeastern Brazil, between 2006 and 2008. The following indicators were used: age-standardized mortality rate, relative mean deviation of mortality rate, ratio of reported to estimated live births, relative mean deviation of birth rate and proportion of deaths of unknown cause. These indicators were grouped into three dimensions: mortality, fertility and ill-defined causes. Based on predetermined criteria, municipalities were classified as follows: consolidated vital data; vital data in the consolidation phase; and non-consolidated data. The data were analyzed using EpiInfo and Terraview for map preparation. RESULTS: Of the 185 municipalities in the state of Pernambuco, 141 (76.2%) were classified as having consolidated vital data, accounting for about 85% of the state population, and 17 (9.2%) were classified as having non-consolidated data, accounting for only 4.9% of the population. Larger municipalities (50,000 inhabitants or more) showed better data quality. CONCLUSION: The approach studied proved itself valuable to assess the quality of vital information and identify inequalities in Pernambuco. Reduction of inequalities is a challenge in this state in the sense of enabling vital information to be analyzed directly from data systems at the local level. It will also allow assessing the effectiveness of initiatives to reduce infant mortality in Pernambuco.