Intra-urban differences underlying leprosy spatial distribution in central Brazil: geospatial techniques as potential tools for surveillance.

This ecological study identified an aggregation of urban neighbourhoods spatial patterns in the cumulative new case detection rate (NCDR) of leprosy in the municipality of Rondonópolis, central Brazil, as well as intra-urban socioeconomic differences underlying this distribution. Scan statistics of all leprosy cases reported in the area from 2011 to 2017 were used to investigate spatial and spatiotemporal clusters of the disease at the neighbourhood level. The associations between the log of the smoothed NCDR and demographic, socioeconomic, and structural characteristics were explored by comparing multivariate models based on ordinary least squares (OLS) regression, spatial lag, spatial error, and geographically weighted regression (GWR). Leprosy cases were observed in 84.1% of the neighbourhoods of Rondonópolis, where 848 new cases of leprosy were reported corresponding to a cumulative NCDR of 57.9 cases/100,000 inhabitants. Spatial and spatiotemporal high-risk clusters were identified in western and northern neighbourhoods, whereas central and southern areas comprised low-risk areas. The GWR model was selected as the most appropriate modelling strategy (adjusted R²: 0.305; AIC: 242.85). By mapping the GWR coefficients, we identified that low literacy rate and low mean monthly nominal income per household were associated with a high NCDR of leprosy, especially in the neighbourhoods located within high-risk areas. In conclusion, leprosy presented a heterogeneous and peripheral spatial distribution at the neighbourhood level, which seems to have been shaped by intra-urban differences related to deprivation and poor living conditions. This information should be considered by decision-makers while implementing surveillance measures aimed at leprosy control.

Integrated control of neglected tropical diseases in Brazil: document review of a national campaign in light of WHO recommendations.

Objective: To describe the results of a national campaign aimed at the integrated control of neglected tropical diseases in Brazil in light of the World Health Organization (WHO) official documentation related to the integration of strategies for the prevention, control, and elimination or eradication of neglected tropical diseases. Methods: A document review that included official WHO documents published between 2007 and 2020 and campaign results extracted from the official technical report produced by the Brazilian Ministry of Health. Results: The integrated control of neglected tropical diseases was gradually incorporated in the WHO documentation over time. Preventive chemotherapy through mass drug administration, intensified case management, and integrated vector management were extensively recommended as strategies for integrated control. The Brazilian campaign was carried out in four iterations between 2013 and 2017. Children aged 5 to 14 years enrolled in municipal public schools nationwide were targeted. In summary, a total of 1 074 and 73 522 new cases of leprosy and trachoma, respectively, were detected. Nearly 18 million doses of preventive chemotherapy for soil-transmitted helminthiasis were administered. More than 700 cases of schistosomiasis were diagnosed and treated. Conclusions: The integrated strategies implemented in Brazil throughout the campaign generated results aligned with the WHO recommendations for the control of neglected tropical diseases, especially those regarding mass drug administration, active case detection, and intensified case management. Therefore, the continuity of the campaign with adequate evaluation tools must be encouraged as a constant public health policy in the Brazilian government agenda.

Integrated control of neglected tropical diseases in Brazil: document review of a national campaign in light of WHO recommendations

[ABSTRACT]. Objective. To describe the results of a national campaign aimed at the integrated control of neglected tropical diseases in Brazil in light of the World Health Organization (WHO) official documentation related to the integration of strategies for the prevention, control, and elimination or eradication of neglected tropical diseases. Methods. A document review that included official WHO documents published between 2007 and 2020 and campaign results extracted from the official technical report produced by the Brazilian Ministry of Health. Results. The integrated control of neglected tropical diseases was gradually incorporated in the WHO docu- mentation over time. Preventive chemotherapy through mass drug administration, intensified case management, and integrated vector management were extensively recommended as strategies for integrated control. The Brazilian campaign was carried out in four iterations between 2013 and 2017. Children aged 5 to 14 years enrolled in municipal public schools nationwide were targeted. In summary, a total of 1 074 and 73 522 new cases of leprosy and trachoma, respectively, were detected. Nearly 18 million doses of preventive chemo- therapy for soil-transmitted helminthiasis were administered. More than 700 cases of schistosomiasis were diagnosed and treated. Conclusions. The integrated strategies implemented in Brazil throughout the campaign generated results aligned with the WHO recommendations for the control of neglected tropical diseases, especially those regarding mass drug administration, active case detection, and intensified case management. Therefore, the continuity of the campaign with adequate evaluation tools must be encouraged as a constant public health policy in the Brazilian government agenda.

[RESUMEN]. Objetivo. Describir los resultados de una campaña nacional dirigida al control integrado de las enfermedades tropicales desatendidas en Brasil, a la luz de la documentación oficial de la Organización Mundial de la Salud (OMS) relacionada con la integración de estrategias para la prevención, el control y la eliminación o erradi- cación de las enfermedades tropicales desatendidas. Métodos. Revisión documental que comprendió documentos oficiales de la OMS publicados entre el 2007 y el 2020, así como los resultados de las campañas, extraídos del informe técnico oficial elaborado por el Ministerio de Salud de Brasil. Resultados. Con el tiempo, la OMS ha ido incorporando gradualmente en sus documentos el concepto de control integrado de las enfermedades tropicales desatendidas. Tanto los tratamientos quimioprofilácticos mediante la administración masiva de medicamentos como la intensificación del tratamiento de los casos y el control integrado de vectores han sido recomendados ampliamente como estrategias para el control integrado. En Brasil, la campaña se llevó a cabo en cuatro ediciones, realizadas entre el 2013 y el 2017. Las actividades estuvieron dirigidas a la población escolar de entre 5 y 14 años de las escuelas públicas municipales de todo el país. En resumen, se detectaron 1 074 y 73 522 casos nuevos de lepra y tracoma, respectivamente; se administraron casi 18 millones de dosis de tratamiento quimioprofiláctico contra las geo- helmintiasis; y se diagnosticaron y trataron más de 700 casos de esquistosomiasis. Conclusiones. Las estrategias integradas aplicadas en Brasil en el transcurso de la campaña permitieron obtener resultados acordes con las recomendaciones de la OMS para el control de las enfermedades tropi- cales desatendidas, especialmente en lo relativo a la administración masiva de medicamentos, la búsqueda activa de casos y la intensificación de su tratamiento. Por lo tanto, es necesario fomentar la continuidad de la campaña con herramientas de evaluación adecuadas, como una política constante en materia de salud pública dentro de la agenda del Gobierno de Brasil.

[RESUMO]. Objetivo. Descrever os resultados de uma campanha nacional voltada ao controle integrado de doenças tropicais negligenciadas no Brasil considerando os documentos oficiais da Organização Mundial da Saúde (OMS) que tratam da integração de estratégias para a prevenção, o controle e a eliminação ou erradicação de doenças tropicais negligenciadas. Métodos. Realizou-se uma revisão documental que incluiu documentos oficiais da OMS publicados entre 2007 e 2020 e resultados de campanhas extraídos do relatório técnico oficial produzido pelo Ministério da Saúde do Brasil. Resultados. O controle integrado de doenças tropicais negligenciadas foi gradualmente incorporado à doc- umentação da OMS ao longo do tempo. A quimioterapia preventiva por meio da administração em massa de medicamentos, a intensificação da gestão de casos e o manejo integrado de vetores foram amplamente recomendados como estratégias para o controle integrado. A campanha brasileira foi realizada em quatro iterações entre 2013 e 2017. O público-alvo foram crianças de 5 a 14 anos matriculadas em escolas públicas municipais de todo o país. Em resumo, foi detectado um total de 1 074 e 73 522 novos casos de hanseníase e tracoma, respectivamente. Foram administradas cerca de 18 milhões de doses de quimioterapia preventiva para helmintíase transmitida pelo solo. Mais de 700 casos de esquistossomose foram diagnosticados e tratados. Conclusões. As estratégias integradas implementadas no Brasil ao longo da campanha geraram resultados alinhados com as recomendações da OMS para o controle de doenças tropicais negligenciadas, especialmente aquelas relativas à administração em massa de medicamentos, à detecção ativa de casos e à intensificação da gestão de casos. Portanto, a continuidade da campanha com ferramentas de avaliação adequadas deve ser incentivada como uma política de saúde pública constante na agenda do governo brasileiro.

Self-reported clinical history of misdiagnosed leprosy cases in the State of Mato Grosso, Brzil, 2016-2019.

This study aimed to analyze the self-reported clinical history of patients misdiagnosed with leprosy in the State of Mato Grosso, Brazil. This is a cross-sectional study of new leprosy cases diagnosed in the State of Mato Grosso from 2016 to 2019, with individuals who were released from multidrug therapy due to misdiagnosis after starting treatment. Data were collected via telephone interviews. Over the study period, 354 leprosy cases were released from treatment due to misdiagnosis, of which 162 (45.8%) could be interviewed. All interviewees expressed dissatisfaction with their treatment, which prompted them to seek a reevaluation of their diagnosis before they were released due to "misdiagnosis". Among them, 35.8% received a final diagnosis of a musculoskeletal or connective tissue disease - mainly fibromyalgia and degenerative changes in the spine - followed by 13.6% with diagnoses of skin and subcutaneous tissue diseases. For 23.5% of the respondents, no alternative diagnosis was established, whereas 7.4% were later re-diagnosed with leprosy. Fibromyalgia and spinal problems were the most common alternative diagnoses for erroneous leprosy. Although the diagnosis of leprosy is usually clinical and does not require access to technical infrastructure in most cases, some more complex situations require diagnostic support via complementary tests, as well as close collaboration between primary care and reference services.

Integrated control of neglected tropical diseases in Brazil: document review of a national campaign in light of WHO recommendations / Control integrado de las enfermedades tropicales desatendidas en Brasil: revisión documental de una campaña nacional a la luz de las recomendaciones de la OMS / Controle integrado de doenças tropicais negligenciadas no Brasil: revisão documental de uma campanha nacional considerando as recomendações da OMS

ABSTRACT Objective. To describe the results of a national campaign aimed at the integrated control of neglected tropical diseases in Brazil in light of the World Health Organization (WHO) official documentation related to the integration of strategies for the prevention, control, and elimination or eradication of neglected tropical diseases. Methods. A document review that included official WHO documents published between 2007 and 2020 and campaign results extracted from the official technical report produced by the Brazilian Ministry of Health. Results. The integrated control of neglected tropical diseases was gradually incorporated in the WHO documentation over time. Preventive chemotherapy through mass drug administration, intensified case management, and integrated vector management were extensively recommended as strategies for integrated control. The Brazilian campaign was carried out in four iterations between 2013 and 2017. Children aged 5 to 14 years enrolled in municipal public schools nationwide were targeted. In summary, a total of 1 074 and 73 522 new cases of leprosy and trachoma, respectively, were detected. Nearly 18 million doses of preventive chemotherapy for soil-transmitted helminthiasis were administered. More than 700 cases of schistosomiasis were diagnosed and treated. Conclusions. The integrated strategies implemented in Brazil throughout the campaign generated results aligned with the WHO recommendations for the control of neglected tropical diseases, especially those regarding mass drug administration, active case detection, and intensified case management. Therefore, the continuity of the campaign with adequate evaluation tools must be encouraged as a constant public health policy in the Brazilian government agenda.

RESUMEN Objetivo. Describir los resultados de una campaña nacional dirigida al control integrado de las enfermedades tropicales desatendidas en Brasil, a la luz de la documentación oficial de la Organización Mundial de la Salud (OMS) relacionada con la integración de estrategias para la prevención, el control y la eliminación o erradicación de las enfermedades tropicales desatendidas. Métodos. Revisión documental que comprendió documentos oficiales de la OMS publicados entre el 2007 y el 2020, así como los resultados de las campañas, extraídos del informe técnico oficial elaborado por el Ministerio de Salud de Brasil. Resultados. Con el tiempo, la OMS ha ido incorporando gradualmente en sus documentos el concepto de control integrado de las enfermedades tropicales desatendidas. Tanto los tratamientos quimioprofilácticos mediante la administración masiva de medicamentos como la intensificación del tratamiento de los casos y el control integrado de vectores han sido recomendados ampliamente como estrategias para el control integrado. En Brasil, la campaña se llevó a cabo en cuatro ediciones, realizadas entre el 2013 y el 2017. Las actividades estuvieron dirigidas a la población escolar de entre 5 y 14 años de las escuelas públicas municipales de todo el país. En resumen, se detectaron 1 074 y 73 522 casos nuevos de lepra y tracoma, respectivamente; se administraron casi 18 millones de dosis de tratamiento quimioprofiláctico contra las geohelmintiasis; y se diagnosticaron y trataron más de 700 casos de esquistosomiasis. Conclusiones. Las estrategias integradas aplicadas en Brasil en el transcurso de la campaña permitieron obtener resultados acordes con las recomendaciones de la OMS para el control de las enfermedades tropicales desatendidas, especialmente en lo relativo a la administración masiva de medicamentos, la búsqueda activa de casos y la intensificación de su tratamiento. Por lo tanto, es necesario fomentar la continuidad de la campaña con herramientas de evaluación adecuadas, como una política constante en materia de salud pública dentro de la agenda del Gobierno de Brasil.

RESUMO Objetivo. Descrever os resultados de uma campanha nacional voltada ao controle integrado de doenças tropicais negligenciadas no Brasil considerando os documentos oficiais da Organização Mundial da Saúde (OMS) que tratam da integração de estratégias para a prevenção, o controle e a eliminação ou erradicação de doenças tropicais negligenciadas. Métodos. Realizou-se uma revisão documental que incluiu documentos oficiais da OMS publicados entre 2007 e 2020 e resultados de campanhas extraídos do relatório técnico oficial produzido pelo Ministério da Saúde do Brasil. Resultados. O controle integrado de doenças tropicais negligenciadas foi gradualmente incorporado à documentação da OMS ao longo do tempo. A quimioterapia preventiva por meio da administração em massa de medicamentos, a intensificação da gestão de casos e o manejo integrado de vetores foram amplamente recomendados como estratégias para o controle integrado. A campanha brasileira foi realizada em quatro iterações entre 2013 e 2017. O público-alvo foram crianças de 5 a 14 anos matriculadas em escolas públicas municipais de todo o país. Em resumo, foi detectado um total de 1 074 e 73 522 novos casos de hanseníase e tracoma, respectivamente. Foram administradas cerca de 18 milhões de doses de quimioterapia preventiva para helmintíase transmitida pelo solo. Mais de 700 casos de esquistossomose foram diagnosticados e tratados. Conclusões. As estratégias integradas implementadas no Brasil ao longo da campanha geraram resultados alinhados com as recomendações da OMS para o controle de doenças tropicais negligenciadas, especialmente aquelas relativas à administração em massa de medicamentos, à detecção ativa de casos e à intensificação da gestão de casos. Portanto, a continuidade da campanha com ferramentas de avaliação adequadas deve ser incentivada como uma política de saúde pública constante na agenda do governo brasileiro.

Self-reported clinical history of misdiagnosed leprosy cases in the State of Mato Grosso, Brazil, 2016-2019 / Histórico clínico autorreferido de casos mal classificados de hanseníase no Estado do Mato Grosso, Brasil, 2016-2019 / Historia clínica autorreportada de casos de lepra mal diagnosticados en el estado de Mato Grosso, Brasil, 2016-2019

This study aimed to analyze the self-reported clinical history of patients misdiagnosed with leprosy in the State of Mato Grosso, Brazil. This is a cross-sectional study of new leprosy cases diagnosed in the State of Mato Grosso from 2016 to 2019, with individuals who were released from multidrug therapy due to misdiagnosis after starting treatment. Data were collected via telephone interviews. Over the study period, 354 leprosy cases were released from treatment due to misdiagnosis, of which 162 (45.8%) could be interviewed. All interviewees expressed dissatisfaction with their treatment, which prompted them to seek a reevaluation of their diagnosis before they were released due to "misdiagnosis". Among them, 35.8% received a final diagnosis of a musculoskeletal or connective tissue disease - mainly fibromyalgia and degenerative changes in the spine - followed by 13.6% with diagnoses of skin and subcutaneous tissue diseases. For 23.5% of the respondents, no alternative diagnosis was established, whereas 7.4% were later re-diagnosed with leprosy. Fibromyalgia and spinal problems were the most common alternative diagnoses for erroneous leprosy. Although the diagnosis of leprosy is usually clinical and does not require access to technical infrastructure in most cases, some more complex situations require diagnostic support via complementary tests, as well as close collaboration between primary care and reference services.

O objetivo deste estudo foi analisar o histórico clínico autorreferido de pacientes diagnosticados erroneamente com hanseníase no Estado do Mato Grosso, Brasil. Trata-se de um estudo transversal de novos casos de hanseníase diagnosticados no Estado do Mato Grosso, de 2016 a 2019, que após o início da poliquimioterapia foram liberados do tratamento devido a erros de diagnóstico. Para a coleta de dados, foram realizadas entrevistas telefônicas. Durante o período do estudo, 354 indivíduos com hanseníase foram liberados do tratamento por erro de diagnóstico, dos quais 162 (45,8%) puderam ser entrevistados. Todos os entrevistados expressaram insatisfação com o tratamento, levando à reavaliação do diagnóstico antes de serem liberados por "erro de diagnóstico". Dentre eles, 35,8% tinham como diagnóstico final uma doença musculoesquelética ou do tecido conjuntivo, principalmente fibromialgia e alterações na coluna vertebral, seguidos por 13,6% com diagnósticos de doenças de pele e tecido subcutâneo. Para 23,5% dos entrevistados, nenhum diagnóstico alternativo foi estabelecido, enquanto 7,4% foram posteriormente rediagnosticados com hanseníase. Diagnósticos errôneos de hanseníase foram mais frequentemente reclassificados como fibromialgia e problemas na coluna vertebral. Embora o diagnóstico da hanseníase seja geralmente clínico e não exija acesso à infraestrutura técnica na maioria dos casos, algumas situações mais complexas requerem apoio ao diagnóstico por meio de exames complementares, bem como estreita colaboração entre a atenção primária e os serviços de referência.

El objetivo de este estudio fue analizar la historia clínica autorreportada de pacientes con diagnóstico erróneo de lepra en el estado de Mato Grosso, Brasil. Se trata de un estudio transversal de nuevos casos de lepra diagnosticados en el estado de Mato Grosso, en el periodo de 2016 a 2019, que, después de iniciar la quimioterapia multimedicamentosa, fueron dados de alta del tratamiento por errores diagnósticos. Para la recolección de datos se realizaron entrevistas telefónicas. Durante el periodo de estudio, 354 individuos con lepra fueron dados de alta del tratamiento por diagnóstico erróneo, de los cuales 162 (45,8%) fueron entrevistados. Todos los encuestados manifestaron su insatisfacción con el tratamiento, lo que llevó a una reevaluación del diagnóstico antes de ser dados de alta por "error de diagnóstico". Entre ellos, el 35,8% tenía como diagnóstico final una enfermedad musculoesquelética o del tejido conectivo, principalmente fibromialgia y cambios en la columna, seguidos de un 13,6% con diagnóstico de enfermedades de la piel y del tejido subcutáneo. El 23,5% de los encuestados no recibieron un diagnóstico alternativo, mientras que el 7,4% fueron rediagnosticados posteriormente con lepra. Los diagnósticos erróneos de lepra se reclasificaron con mayor frecuencia como fibromialgia y problemas de columna. Aunque el diagnóstico de lepra es generalmente clínico y, en la mayoría de los casos, no requiere acceso a infraestructura técnica, algunas situaciones más complejas necesitan pruebas complementarias para su diagnóstico, así como una estrecha colaboración entre la atención primaria y los servicios de referencia.

Implementation approaches for leprosy prevention with single-dose rifampicin: A support tool for decision making.

BACKGROUND: In the past 15 years, the decline in annually detected leprosy patients has stagnated. To reduce the transmission of Mycobacterium leprae, the World Health Organization recommends single-dose rifampicin (SDR) as post-exposure prophylaxis (PEP) for contacts of leprosy patients. Various approaches to administer SDR-PEP have been piloted. However, requirements and criteria to select the most suitable approach were missing. The aims of this study were to develop an evidence-informed decision tool to support leprosy programme managers in selecting an SDR-PEP implementation approach, and to assess its user-friendliness among stakeholders without SDR-PEP experience. METHODOLOGY: The development process comprised two phases. First, a draft tool was developed based on a literature review and semi-structured interviews with experts from various countries, organisations and institutes. This led to: an overview of existing SDR-PEP approaches and their characteristics; understanding the requirements and best circumstances for these approaches; and, identification of relevant criteria to select an approach. In the second phase the tool's usability and applicability was assessed, through interviews and a focus group discussion with intended, inexperienced users; leprosy programme managers and non-governmental organization (NGO) staff. PRINCIPAL FINDINGS: Five SDR-PEP implementation approaches were identified. The levels of endemicity and stigma, and the accessibility of an area were identified as most relevant criteria to select an approach. There was an information gap on cost-effectiveness, while successful implementation depends on availability of resources. Five basic requirements, irrespective of the approach, were identified: stakeholder support; availability of medication; compliant health system; trained health staff; and health education. Two added benefits of the tool were identified: its potential value for advocacy and for training. CONCLUSION: An evidence-informed SDR-PEP decision tool to support the selection of implementation approaches for leprosy prevention was developed. While the tool was evaluated by potential users, more research is needed to further improve the tool, especially health-economic studies, to ensure efficient and cost-effective implementation of SDR-PEP.

Social school contacts of multibacillary leprosy cases in children living in the hyperendemic region of the Midwest of Brazil

Abstract Objective: To analyze the prevalence of Mycobacterium leprae detection and the associated factors among social contacts in the school environment of multibacillary cases living in a hyperendemic municipality of the state of Mato Grosso. Methods: Cross-sectional study with 236 social contacts of multibacillary leprosy from public schools and residents in Cuiabá (Mato Grosso) in 2018. The sources of information were interviews and nasal swab tests for molecular analysis by polymerase chain reaction - PCR. For the prevalence ratio estimates, crude and adjusted analyses were performed using robust Poisson regression and their respective confidence intervals (95% CI). The ArcGIS 9.1 software was used for the geographic distribution analyses. Results: The prevalence of detection of M. leprae in social contacts was 14%. A total of 63.6% of the schools surveyed had 5.1% to 50% of the social contacts of leprosy with positive PCR. The analysis of the geographic distribution in the neighborhoods showed a high prevalence of infection, being higher than 50% in some localities. The highest proportion of positive results occurred in the northern region of the city and from a precarious socioeconomic class. Conclusion: The results showed a high prevalence of detection of M. leprae among social contacts in areas with poor socioeconomic conditions. In these regions, there is a greater risk of

Are the clinical features of leprosy and American tegumentary leishmaniasis worse in patients with both diseases?

This cross-sectional population-based study compared clinical features of leprosy and American tegumentary leishmaniasis (ATL) in patients diagnosed with both diseases (n=414) and in those diagnosed with only leprosy (n=27,790) or only ATL (n=24,357) in Mato Grosso State, which is a hyperendemic area for both diseases in Midwest Brazil. All new cases of leprosy and ATL reported in the area from 2008 to 2017 were included. Patients diagnosed with both diseases were identified by a probabilistic linkage procedure applied to leprosy and ATL databases of the national reporting system. The distribution of the frequency of clinical features between groups was compared by the chi-square test, followed by a multivariate logistic regression. Patients diagnosed with both leprosy and ATL presented higher odds of having nerve damage (OR: 1.34; 95% CI: 1.09-1.66) and leprosy reactions (OR: 1.35; 95% CI: 1.04-1.76) compared to patients diagnosed only with leprosy. Mucocutaneous leishmaniasis (OR: 2.29; 95% CI: 1.74-3.00) was more frequent among patients with both diagnoses when compared to patients who only had ATL. In conclusion, patients diagnosed with both leprosy and ATL present more severe clinical features of such diseases. Our data can be useful for designing health policies aimed at timely and integrated management of leprosy and ATL in co-endemic areas.

Spatio-temporal analysis of leprosy risks in a municipality in the state of Mato Grosso-Brazilian Amazon: results from the leprosy post-exposure prophylaxis program in Brazil.

BACKGROUND: Leprosy post-exposure prophylaxis (LPEP) with single dose rifampicin (SDR) can be integrated into different leprosy control program set-ups once contact tracing has been established. We analyzed the spatio-temporal changes in the distribution of index cases (IC) and co-prevalent cases among contacts of leprosy patients (CP) over the course of the LPEP program in one of the four study areas in Brazil, namely the municipality of Alta Floresta, state of Mato Grosso, in the Brazilian Amazon basin. METHODS: Leprosy cases were mapped, and socioeconomic indicators were evaluated to explain the leprosy distribution of all leprosy cases diagnosed in the period 2016-2018. Data were obtained on new leprosy cases [Notifiable diseases information system (Sinan)], contacts traced by the LPEP program, and socioeconomic variables [Brazilian Institute of Geography and Statistics (IBGE)]. Kernel, SCAN, factor analysis and spatial regression were applied to analyze changes. RESULTS: Overall, the new case detection rate (NCDR) was 20/10 000 inhabitants or 304 new cases, of which 55 were CP cases among the 2076 examined contacts. Changes over time were observed in the geographic distribution of cases. The highest concentration of cases was observed in the northeast of the study area, including one significant cluster (Relative risk = 2.24; population 27 427, P-value < 0.001) in an area characterized by different indicators associated with poverty as identified through spatial regression (Coefficient 3.34, P-value = 0.01). CONCLUSIONS: The disease distribution was partly explained by poverty indicators. LPEP influences the spatial dynamic of the disease and results highlighted the relevance of systematic contact surveillance for leprosy elimination.

Social school contacts of multibacillary leprosy cases in children living in the hyperendemic region of the Midwest of Brazil.

OBJECTIVE: To analyze the prevalence of Mycobacterium leprae detection and the associated factors among social contacts in the school environment of multibacillary cases living in a hyperendemic municipality of the state of Mato Grosso. METHODS: Cross-sectional study with 236 social contacts of multibacillary leprosy from public schools and residents in Cuiabá (Mato Grosso) in 2018. The sources of information were interviews and nasal swab tests for molecular analysis by polymerase chain reaction - PCR. For the prevalence ratio estimates, crude and adjusted analyses were performed using robust Poisson regression and their respective confidence intervals (95% CI). The ArcGIS 9.1 software was used for the geographic distribution analyses. RESULTS: The prevalence of detection of M. leprae in social contacts was 14%. A total of 63.6% of the schools surveyed had 5.1% to 50% of the social contacts of leprosy with positive PCR. The analysis of the geographic distribution in the neighborhoods showed a high prevalence of infection, being higher than 50% in some localities. The highest proportion of positive results occurred in the northern region of the city and from a precarious socioeconomic class. CONCLUSION: The results showed a high prevalence of detection of M. leprae among social contacts in areas with poor socioeconomic conditions. In these regions, there is a greater risk of infection and of getting sick.

Are the clinical features of leprosy and American tegumentary leishmaniasis worse in patients with both diseases?

ABSTRACT This cross-sectional population-based study compared clinical features of leprosy and American tegumentary leishmaniasis (ATL) in patients diagnosed with both diseases (n=414) and in those diagnosed with only leprosy (n=27,790) or only ATL (n=24,357) in Mato Grosso State, which is a hyperendemic area for both diseases in Midwest Brazil. All new cases of leprosy and ATL reported in the area from 2008 to 2017 were included. Patients diagnosed with both diseases were identified by a probabilistic linkage procedure applied to leprosy and ATL databases of the national reporting system. The distribution of the frequency of clinical features between groups was compared by the chi-square test, followed by a multivariate logistic regression. Patients diagnosed with both leprosy and ATL presented higher odds of having nerve damage (OR: 1.34; 95% CI: 1.09-1.66) and leprosy reactions (OR: 1.35; 95% CI: 1.04-1.76) compared to patients diagnosed only with leprosy. Mucocutaneous leishmaniasis (OR: 2.29; 95% CI: 1.74-3.00) was more frequent among patients with both diagnoses when compared to patients who only had ATL. In conclusion, patients diagnosed with both leprosy and ATL present more severe clinical features of such diseases. Our data can be useful for designing health policies aimed at timely and integrated management of leprosy and ATL in co-endemic areas.

Leprosy and cutaneous leishmaniasis affecting the same individuals: A retrospective cohort analysis in a hyperendemic area in Brazil.

BACKGROUND: Leprosy and cutaneous leishmaniasis (CL) are neglected tropical diseases (NTDs) affecting the skin. Their control is challenging but the integration of skin NTDs control programs is recommended to improve timely detection and treatment. However, little is known about the occurrence of leprosy and CL in the same individuals, and what are the characteristics of such patients. This study aimed to identify and characterize patients diagnosed with both leprosy and CL (i.e., outcome) in the hyperendemic state of Mato Grosso, Brazil. Also, we investigated the demographic risk factors associated with the period between the diagnosis of both diseases. METHODOLOGY/PRINCIPAL FINDINGS: A retrospective cohort study was conducted with patients diagnosed between 2008 and 2017. From the leprosy (n = 28,204) and CL (n = 24,771) databases of the national reporting system, 414 (0.8%; 414/52,561) patients presenting both diseases were identified through a probabilistic linkage procedure. This observed number was much higher than the number of patients that would be expected by chance alone (n = 22). The spatial distribution of patients presenting the outcome was concentrated in the North and Northeast mesoregions of the state. Through survival analysis, we detected that the probability of a patient developing both diseases increased over time from 0.2% in the first year to 1.0% within seven years. Further, using a Cox model we identified male sex (HR: 2.3; 95% CI: 1.7-2.9) and low schooling level (HR: 1.5; 95% CI: 1.2-1.9) as positively associated with the outcome. Furthermore, the hazard of developing the outcome was higher among individuals aged 40-55 years. CONCLUSIONS/SIGNIFICANCE: Leprosy and CL are affecting the same individuals in the area. Integration of control policies for both diseases will help to efficiently cover such patients. Measures should be focused on timely diagnosis by following-up patients diagnosed with CL, active case detection, and training of health professionals.

Perception of cure among leprosy patients post completion of multi-drug therapy.

BACKGROUND: Leprosy is a treatable disease; however, the release from treatment after completion of multidrug therapy (MDT) often does not equal absence of health problems. Consequently, sequelae interfere with the patient's perception of cure. The objective of this study was to analyze the factors associated with the perception of not being healed among people treated for leprosy in a highly endemic area in Brazil. METHOD: A cross-sectional study of perceived cure of leprosy in the post-release from treatment period was conducted in Cáceres in the state of Mato Grosso, Brazil. The study included a total of 390 leprosy patients treated with MDT and released after completion of treatment from 1 January 2000 to 31 December 2017. The dependent variable was self-reported cure of leprosy; the independent variables included clinical, operational and socioeconomic variables. RESULTS: Out of the 390 former leprosy patients, 304 (77.9%) perceived themselves as cured and 86 (22.1%) considered themselves unhealed. Among the latter, 49 (57.0%) reported muscle weakness and joint pains. Individuals with complaints related to leprosy post-release from treatment had a 4.6 times higher chance to self-report as unhealed (OR 4.6; 95% CI 2.5-8.5). Patients with physical disabilities (PD) grade 1 and 2 at the time of the study had a 3.1 (OR 3.1; 95% CI 1.3-7.4) and 8.8 (OR 7.7; 95% CI 3.5-21.9) times higher likelihood to self-identify as unhealed, respectively. CONCLUSION: Among successfully treated leprosy patients, a quarter self-report as unhealed of the disease. The factors associated with the perception of being unhealed are PD and complaints related to leprosy in the post-release from treatment phase.

The long-term impact of the Leprosy Post-Exposure Prophylaxis (LPEP) program on leprosy incidence: A modelling study.

BACKGROUND: The Leprosy Post-Exposure Prophylaxis (LPEP) program explored the feasibility and impact of contact tracing and the provision of single dose rifampicin (SDR) to eligible contacts of newly diagnosed leprosy patients in Brazil, India, Indonesia, Myanmar, Nepal, Sri Lanka and Tanzania. As the impact of the programme is difficult to establish in the short term, we apply mathematical modelling to predict its long-term impact on the leprosy incidence. METHODOLOGY: The individual-based model SIMCOLEP was calibrated and validated to the historic leprosy incidence data in the study areas. For each area, we assessed two scenarios: 1) continuation of existing routine activities as in 2014; and 2) routine activities combined with LPEP starting in 2015. The number of contacts per index patient screened varied from 1 to 36 between areas. Projections were made until 2040. PRINCIPAL FINDINGS: In all areas, the LPEP program increased the number of detected cases in the first year(s) of the programme as compared to the routine programme, followed by a faster reduction afterwards with increasing benefit over time. LPEP could accelerate the reduction of the leprosy incidence by up to six years as compared to the routine programme. The impact of LPEP varied by area due to differences in the number of contacts per index patient included and differences in leprosy epidemiology and routine control programme. CONCLUSIONS: The LPEP program contributes significantly to the reduction of the leprosy incidence and could potentially accelerate the interruption of transmission. It would be advisable to include contact tracing/screening and SDR in routine leprosy programmes.

Misdiagnosis of leprosy in Brazil in the period 2003 - 2017: spatial pattern and associated factors.

BACKGROUND: Leprosy causes a range of symptoms, and most diagnoses are established based on the clinical picture. Therefore, false negative and positive diagnoses are relatively common. We analyzed the spatial pattern of leprosy misdiagnosis and associated factors in Brazil. METHOD: Exploratory analyses of Kernel density of the new case detection rate (NCDR) and proportion of misdiagnosis in Brazil, 2003-2017. Factors associated with misdiagnosis were identified by logistic regression at the 5% significance level. RESULT: A total of 574,181 new leprosy cases were recorded in Brazil within the study period, of which 7,477 (1.3%) were misdiagnoses. No spatial correlation was observed between the proportion of misdiagnoses and the NCDR. The likelihood of misdiagnosis was elevated for females [OR: 1.58 (1.51-1.66)], children [OR: 1.49 (1.36-1.64)]; paucibacillary [OR: 1.08 (1.02-1.13)], indeterminate clinical forms [OR: 2.37 (2.15-2.62)], for cases diagnosed in the frame of mass screenings [OR: 3.36 (3.09- 3.73)] and contact examination [OR: 2.30 (2.13-2.49)] and for cases with affected nerves but no skin lesions [OR: 2.47 (2.19-2.77)] when compared with those presenting both skin lesion and affected nerves. CONCLUSION: Misdiagnosis of leprosy is not correlated with the endemicity level in Brazil but rather with personal, diagnosis-related and disease characteristics.

Leprosy post-exposure prophylaxis with single-dose rifampicin (LPEP): an international feasibility programme.

BACKGROUND: Innovative approaches are required for leprosy control to reduce cases and curb transmission of Mycobacterium leprae. Early case detection, contact screening, and chemoprophylaxis are the most promising tools. We aimed to generate evidence on the feasibility of integrating contact tracing and administration of single-dose rifampicin (SDR) into routine leprosy control activities. METHODS: The leprosy post-exposure prophylaxis (LPEP) programme was an international, multicentre feasibility study implemented within the leprosy control programmes of Brazil, India, Indonesia, Myanmar, Nepal, Sri Lanka, and Tanzania. LPEP explored the feasibility of combining three key interventions: systematically tracing contacts of individuals newly diagnosed with leprosy; screening the traced contacts for leprosy; and administering SDR to eligible contacts. Outcomes were assessed in terms of number of contacts traced, screened, and SDR administration rates. FINDINGS: Between Jan 1, 2015, and Aug 1, 2019, LPEP enrolled 9170 index patients and listed 179 769 contacts, of whom 174 782 (97·2%) were successfully traced and screened. Of those screened, 22 854 (13·1%) were excluded from SDR mainly because of health reasons and age. Among those excluded, 810 were confirmed as new patients (46 per 10 000 contacts screened). Among the eligible screened contacts, 1182 (0·7%) refused prophylactic treatment with SDR. Overall, SDR was administered to 151 928 (86·9%) screened contacts. No serious adverse events were reported. INTERPRETATION: Post-exposure prophylaxis with SDR is safe; can be integrated into different leprosy control programmes with minimal additional efforts once contact tracing has been established; and is generally well accepted by index patients, their contacts, and health-care workers. The programme has also invigorated local leprosy control through the availability of a prophylactic intervention; therefore, we recommend rolling out SDR in all settings where contact tracing and screening have been established. FUNDING: Novartis Foundation.

Leprosy post-exposure prophylaxis with single-dose rifampicin (LPEP): an international feasibility programme

Background: Innovative approaches are required for leprosy control to reduce cases and curb transmission of Mycobacterium leprae. Early case detection, contact screening, and chemoprophylaxis are the most promising tools. We aimed to generate evidence on the feasibility of integrating contact tracing and administration of single-dose rifampicin (SDR) into routine leprosy control activities. Methods The leprosy post-exposure prophylaxis (LPEP) programme was an international, multicentre feasibility study implemented within the leprosy control programmes of Brazil, India, Indonesia, Myanmar, Nepal, Sri Lanka, and Tanzania. LPEP explored the feasibility of combining three key interventions: systematically tracing contacts of individuals newly diagnosed with leprosy; screening the traced contacts for leprosy; and administering SDR to eligible contacts. Outcomes were assessed in terms of number of contacts traced, screened, and SDR administration rates. Findings Between Jan 1, 2015, and Aug 1, 2019, LPEP enrolled 9170 index patients and listed 179 769 contacts, of whom 174782 (97·2%) were successfully traced and screened. Of those screened, 22 854 (13·1%) were excluded from SDR mainly because of health reasons and age. Among those excluded, 810 were confirmed as new patients (46 per 10 000 contacts screened). Among the eligible screened contacts, 1182 (0·7%) refused prophylactic treatment with SDR. Overall, SDR was administered to 151 928 (86·9%) screened contacts. No serious adverse events were reported. Interpretation Post-exposure prophylaxis with SDR is safe; can be integrated into different leprosy control programmes with minimal additional efforts once contact tracing has been established; and is generally well accepted by index patients, their contacts, and health-care workers. The programme has also invigorated local leprosy control through the availability of a prophylactic intervention; therefore, we recommend rolling out SDR in all settings where contact tracing and screening have been established(AU).