Seroprevalence of anti-SARS-CoV-2 antibodies in Colombia, 2020: A population-based study.

BACKGROUND: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to cause very high morbidity and mortality throughout Latin American countries. However, few population-based seroprevalence surveys have been conducted to quantify attack rates and characterize drivers of transmission. METHODS: We conducted a population-based cross-sectional study to assess the seroprevalence of antibodies against SARS-CoV-2 in ten cities in Colombia between September and December 2020. The study involved multi-stage cluster sampling at each city. Participants provided a serum sample and answered a demographic and risk factor questionnaire. Prior infection by SARS-CoV-2 was ascertained using the "SARS-CoV-2 Total (COV2T) Advia Centaur - Siemens" chemiluminescence assay. FINDINGS: A total of 17863 participants from 7320 households participated in the study. Seroprevalence varied substantially between cities, ranging from 26% (95%CI 23-29 %) in Medellín to 68% (95%CI 62-74 %) in Guapi. There were no differences in seroprevalence by sex, but seropositivity was higher in certain ethnic groups. There was substantial heterogeneity in seroprevalence within cities, driven to a large extent by a strong association between socioeconomic stratum and seropositivity. INTERPRETATION: Colombia has been one of the Latin American countries most affected by the COVID-19 pandemic. This study documented very high attack rates in several Colombian cities by the end of 2020 and identified key drivers of heterogeneities including ethnicity and socioeconomic stratum. Few studies of seroprevalence of SARS-CoV-2 have been conducted in Latin America, and therefore this study contributes to the fundamental understanding of the pandemic in the region. FUNDING: The study was sponsored by, Ministerio de Ciencia y Tecnología e Innovación -CT361/2020, Ministerio de Salud y Protección Social, Fundación Universitaria del Norte, Imperial College of London, Universidad Nacional de Colombia (Sede Medellín), Universidad de Córdoba, California University, Unidad Nacional de Gestión del Riesgo, Centro de Atención y Diagnóstico de Enfermedades Infecciosas -CDI-, Centro Internacional de Entrenamiento e Investigaciones Médicas -CIDEIM-, Departamento Administrativo Nacional de Estadística - DANE, Fondo Nacional de Turismo -FONTUR-, Secretarías de Salud Departamentales, Distritales y Municipales and Instituto Nacional de Salud.

In vitro biological activity of extracts from marine bacteria cultures against Toxoplasma gondii and Mycobacterium tuberculosis.

AIMS: To evaluate the biological activity of extracts from cultures of marine bacteria against Toxoplasma gondii and Mycobacterium tuberculosis. METHODS AND RESULTS: Ethyl acetate extracts obtained from seven marine bacteria were tested against T. gondii GFP-RH and M. tuberculosis H37Rv. The cytotoxicity on HFF-1 cells was measured by a microplate resazurin fluorescent approach, and the haemolytic activity was determined photometrically. The extracts from Bacillus sp. (INV FIR35 and INV FIR48) affected the tachyzoite viability. The extracts from Bacillus, Pseudoalteromonas, Streptomyces and Micromonospora exhibited effects on infection and proliferation processes of parasite. Bacillus sp. INV FIR48 extract showed an minimum inhibitory concentration value of 50 µg ml-1 against M. tuberculosis H37Rv. All the extracts exhibited relatively low toxicity to HFF-1 cells and the primary culture of erythrocytes, except Bacillus sp. INV FIR35, which decreased cell viability under 20%. Liquid chromatography coupled to mass spectrometry analysis of the most active bacterial extract Bacillus sp. INV FIR48 showed the presence of peptide metabolites related to surfactin. CONCLUSIONS: The extract from culture of deep-sea Bacillus sp. INV FIR48 showed anti-T. gondii and anti-tuberculosis (TB) biological activity with low cytotoxicity. In addition, peptide metabolites were detected in the extract. SIGNIFICANCE AND IMPACT OF THE STUDY: Toxoplasmosis and TB are among the most prevalent diseases worldwide, and the current treatment drugs exhibit side effects. This study confirm that marine bacteria are on hand sources of anti-infective natural products.

Patient- and provider-related factors in the success of multidrug-resistant tuberculosis treatment in Colombia.

OBJECTIVE: To identify patient- and provider-related factors associated with the success of multidrug-resistant tuberculosis (MDR-TB) treatment in the six municipalities of Colombia with the highest number of MDR-TB cases. METHODS: Bivariate and multivariate logistic regressions were used to analyze the association between treatment success (cure or treatment completion) and characteristics of the patients and physicians, nursing professionals, and psychologists involved in their treatment. The importance of knowledge in the management of MDR-TB cases was explored through focus groups with these providers. RESULTS: Of 128 cases of TB-MDR, 63 (49.2%) experienced treatment success. Only 52.9% of the physicians and nursing professionals had satisfactory knowledge about MDR-TB. Logistic regression showed that being HIV negative, being affiliated with the contributory health insurance scheme, being cared for by a male physician, and being cared for by nursing professionals with sufficient knowledge were associated with a successful treatment outcome (p ≤ 0.05). Qualitative analysis showed the need for in-depth, systematic training of health personnel who care for patients with MDR-TB. CONCLUSIONS: Some characteristics of patients and healthcare providers influence treatment success in MDR-TB cases. Physicians' and nurses' knowledge about MDR-TB must be improved, and follow-up of MDR-TB patients who are living with HIV and of those affiliated with the subsidized health insurance scheme in Colombia must be strengthened, as these patients have a lower likelihood of a successful treatment outcome.

Patient- and provider-related factors in the success of multidrug-resistant tuberculosis treatment in Colombia

[ABSTRACT]. Objective. To identify patient- and provider-related factors associated with the success of multidrug-resistant tuberculosis (MDR-TB) treatment in the six municipalities of Colombia with the highest number of MDR-TB cases. Methods. Bivariate and multivariate logistic regressions were used to analyze the association between treatment success (cure or treatment completion) and characteristics of the patients and physicians, nursing professionals, and psychologists involved in their treatment. The importance of knowledge in the management of MDR-TB cases was explored through focus groups with these providers. Results. Of 128 cases of TB-MDR, 63 (49.2%) experienced treatment success. Only 52.9% of the physicians and nursing professionals had satisfactory knowledge about MDR-TB. Logistic regression showed that being HIV negative, being affiliated with the contributory health insurance scheme, being cared for by a male physician, and being cared for by nursing professionals with sufficient knowledge were associated with a successful treatment outcome (p ≤ 0.05). Qualitative analysis showed the need for in-depth, systematic training of health personnel who care for patients with MDR-TB. Conclusions. Some characteristics of patients and healthcare providers influence treatment success in MDR-TB cases. Physicians’ and nurses’ knowledge about MDR-TB must be improved, and follow-up of MDR-TB patients who are living with HIV and of those affiliated with the subsidized health insurance scheme in Colombia must be strengthened, as these patients have a lower likelihood of a successful treatment outcome.

[RESUMEN]. Objetivo. Identificar los factores asociados con el éxito del tratamiento de tuberculosis multidrogorresistente (TB-MDR) relacionados con los pacientes y el personal sanitario en seis municipios de Colombia con mayor número de casos. Métodos. Mediante regresiones logísticas bifactorial y multifactorial se analizó la asociación entre el tratamiento exitoso (curación o cumplimiento del tratamiento) y las características de los pacientes, y de los médicos, profesionales de enfermería y psicólogos vinculados al tratamiento. Se exploró la importancia del conocimiento en el manejo de los casos de TB-MDR mediante grupos focales con esos profesionales. Resultados. De los 128 casos con TB-MDR, 63 (49,2%) tuvieron un tratamiento exitoso. Solo 52,9% de los médicos y profesionales de enfermería tenía conocimientos satisfactorios sobre TB-MDR. La regresión logística mostró que ser negativo al VIH, estar afiliado al régimen de aseguramiento de salud contributivo, estar atendido por un médico del sexo masculino y por profesionales de enfermería con conocimientos suficientes se asociaron con un desenlace exitoso del tratamiento (p ≤ 0,05). El análisis cualitativo mostró la necesidad de profundizar y sistematizar la capacitación del personal sanitario que atiende los casos de TB-MDR. Conclusiones. En el éxito del tratamiento de los casos de TB-MDR influyen algunas características de los pacientes y el personal sanitario. Se requiere fortalecer los conocimientos sobre TB-MDR de médicos y enfermeros, y reforzar el seguimiento de los pacientes con TB-MDR positivos al VIH y de los que pertenecen al régimen subsidiado, dada su menor probabilidad de éxito al tratamiento.

[RESUMO]. Objetivo. Identificar os fatores associados ao êxito do tratamento da tuberculose multirresistente (TBMR) relacionados ao paciente e à equipe de saúde nos seis municípios da Colômbia com o maior número de casos. Métodos. Mediante regressão logística bifatorial e multifatorial, analisou-se a associação entre o êxito do tratamento (cura ou completude do tratamento) e as características dos pacientes e dos médicos, profissionais de enfermagem e psicólogos envolvidos neste. Explorou-se a importância do conhecimento no manejo de casos de TBMR mediante grupos focais com os mesmos profissionais. Resultados. Dos 128 casos de TBMR, 63 (49.2%) lograram êxito no tratamento. Somente 52.9% dos médicos e profissionais de enfermagem tinham conhecimentos satisfatórios sobre TBMR. A regressão logística demonstrou que soronegatividade para o HIV, cobertura pelo sistema de saúde sob o regime de contribuinte, atendimento por um médico do sexo masculino e atendimento por profissionais de enfermagem com conhecimento suficiente foram fatores associados ao êxito do tratamento (p ≤ 0,05). A análise qualitativa demonstrou necessidade de aprofundar e sistematizar a capacitação do pessoal de saúde que atende casos de TBMR. Conclusões. Algumas características do paciente e da equipe de saúde influenciam no êxito do tratamento de casos de TBMR. É preciso fortalecer os conhecimentos dos médicos e profissionais de enfermagem sobre a TBMR e reforçar o seguimento dos pacientes com TBMR que vivem com HIV e os filiados ao sistema de saúde colombiano pelo regime subsidiado, os quais têm menor probabilidade de êxito do tratamento.

[Patient- and provider-related factors in the success of multidrug tuberculosis treatment in ColombiaFatores de êxito do tratamento da tuberculose multirresistente relacionados com o paciente e com a equipe de saúde na Colômbia]. / Factores de éxito del tratamiento de la tuberculosis multidrogorresistente relacionados con el paciente y el personal sanitario en Colombia.

OBJECTIVE: To identify patient- and provider-related factors associated with the success of multidrug-resistant tuberculosis (MDR-TB) treatment in the six municipalities of Colombia with the highest number of MDR-TB cases. METHODS: Bivariate and multivariate logistic regressions were used to analyze the association between treatment success (cure or treatment completion) and characteristics of the patients and physicians, nursing professionals, and psychologists involved in their treatment. The importance of knowledge in the management of MDR-TB cases was explored through focus groups with these providers. RESULTS: Of 128 cases of TB-MDR, 63 (49.2%) experienced treatment success. Only 52.9% of the physicians and nursing professionals had satisfactory knowledge about MDR-TB. Logistic regression showed that being HIV negative, being affiliated with the contributory health insurance scheme, being cared for by a male physician, and being cared for by nursing professionals with sufficient knowledge were associated with a successful treatment outcome (p ≤ 0.05). Qualitative analysis showed the need for in-depth, systematic training of health personnel who care for patients with MDR-TB. CONCLUSIONS: Some characteristics of patients and healthcare providers influence treatment success in MDR-TB cases. Physicians' and nurses' knowledge about MDR-TB must be improved, and follow-up of MDR-TB patients who are living with HIV and of those affiliated with the subsidized health insurance scheme in Colombia must be strengthened, as these patients have a lower likelihood of a successful treatment outcome.

OBJETIVO: Identificar os fatores associados ao êxito do tratamento da tuberculose multirresistente (TBMR) relacionados ao paciente e à equipe de saúde nos seis municípios da Colômbia com o maior número de casos. MÉTODOS: Mediante regressão logística bifatorial e multifatorial, analisou-se a associação entre o êxito do tratamento (cura ou completude do tratamento) e as características dos pacientes e dos médicos, profissionais de enfermagem e psicólogos envolvidos neste. Explorou-se a importância do conhecimento no manejo de casos de TBMR mediante grupos focais com os mesmos profissionais. RESULTADOS: Dos 128 casos de TBMR, 63 (49.2%) lograram êxito no tratamento. Somente 52.9% dos médicos e profissionais de enfermagem tinham conhecimentos satisfatórios sobre TBMR. A regressão logística demonstrou que soronegatividade para o HIV, cobertura pelo sistema de saúde sob o regime de contribuinte, atendimento por um médico do sexo masculino e atendimento por profissionais de enfermagem com conhecimento suficiente foram fatores associados ao êxito do tratamento (p ≤ 0,05). A análise qualitativa demonstrou necessidade de aprofundar e sistematizar a capacitação do pessoal de saúde que atende casos de TBMR. CONCLUSÕES: Algumas características do paciente e da equipe de saúde influenciam no êxito do tratamento de casos de TBMR. É preciso fortalecer os conhecimentos dos médicos e profissionais de enfermagem sobre a TBMR e reforçar o seguimento dos pacientes com TBMR que vivem com HIV e os filiados ao sistema de saúde colombiano pelo regime subsidiado, os quais têm menor probabilidade de êxito do tratamento.

Factores de éxito del tratamiento de la tuberculosis multidrogorresistente relacionados con el paciente y el personal sanitario en Colombia

[RESUMEN]. Objetivo. Identificar los factores asociados con el éxito del tratamiento de tuberculosis multidrogorresistente (TB-MDR) relacionados con los pacientes y el personal sanitario en seis municipios de Colombia con mayor número de casos. Métodos. Mediante regresiones logísticas bifactorial y multifactorial se analizó la asociación entre el tratamiento exitoso (curación o cumplimiento del tratamiento) y las características de los pacientes, y de los médicos, profesionales de enfermería y psicólogos vinculados al tratamiento. Se exploró la importancia del conocimiento en el manejo de los casos de TB-MDR mediante grupos focales con esos profesionales. Resultados. De los 128 casos con TB-MDR, 63 (49,2%) tuvieron un tratamiento exitoso. Solo 52,9% de los médicos y profesionales de enfermería tenía conocimientos satisfactorios sobre TB-MDR. La regresión logística mostró que ser negativo al VIH, estar afiliado al régimen de aseguramiento de salud contributivo, estar atendido por un médico del sexo masculino y por profesionales de enfermería con conocimientos suficientes se asociaron con un desenlace exitoso del tratamiento (p ≤ 0,05). El análisis cualitativo mostró la necesidad de profundizar y sistematizar la capacitación del personal sanitario que atiende los casos de TB-MDR. Conclusiones. En el éxito del tratamiento de los casos de TB-MDR influyen algunas características de los pacientes y el personal sanitario. Se requiere fortalecer los conocimientos sobre TB-MDR de médicos y enfermeros, y reforzar el seguimiento de los pacientes con TB-MDR positivos al VIH y de los que pertenecen al régimen subsidiado, dada su menor probabilidad de éxito al tratamiento.

[ABSTRACT]. Objective. To identify patient- and provider-related factors associated with the success of multidrug-resistant tuberculosis (MDR-TB) treatment in the six municipalities of Colombia with the highest number of MDR-TB cases. Methods. Bivariate and multivariate logistic regressions were used to analyze the association between treatment success (cure or treatment completion) and characteristics of the patients and physicians, nursing professionals, and psychologists involved in their treatment. The importance of knowledge in the management of MDR-TB cases was explored through focus groups with these providers. Results. Of 128 cases of TB-MDR, 63 (49.2%) experienced treatment success. Only 52.9% of the physicians and nursing professionals had satisfactory knowledge about MDR-TB. Logistic regression showed that being HIV negative, being affiliated with the contributory health insurance scheme, being cared for by a male physician, and being cared for by nursing professionals with sufficient knowledge were associated with a successful treatment outcome (p ≤ 0.05). Qualitative analysis showed the need for in-depth, systematic training of health personnel who care for patients with MDR-TB. Conclusions. Some characteristics of patients and healthcare providers influence treatment success in MDR-TB cases. Physicians’ and nurses’ knowledge about MDR-TB must be improved, and follow-up of MDR-TB patients who are living with HIV and of those affiliated with the subsidized health insurance scheme in Colombia must be strengthened, as these patients have a lower likelihood of a successful treatment outcome.

[RESUMO]. Objetivo. Identificar os fatores associados ao êxito do tratamento da tuberculose multirresistente (TBMR) relacionados ao paciente e à equipe de saúde nos seis municípios da Colômbia com o maior número de casos. Métodos. Mediante regressão logística bifatorial e multifatorial, analisou-se a associação entre o êxito do tratamento (cura ou completude do tratamento) e as características dos pacientes e dos médicos, profissionais de enfermagem e psicólogos envolvidos neste. Explorou-se a importância do conhecimento no manejo de casos de TBMR mediante grupos focais com os mesmos profissionais. Resultados. Dos 128 casos de TBMR, 63 (49.2%) lograram êxito no tratamento. Somente 52.9% dos médicos e profissionais de enfermagem tinham conhecimentos satisfatórios sobre TBMR. A regressão logística demonstrou que soronegatividade para o HIV, cobertura pelo sistema de saúde sob o regime de contribuinte, atendimento por um médico do sexo masculino e atendimento por profissionais de enfermagem com conhecimento suficiente foram fatores associados ao êxito do tratamento (p ≤ 0,05). A análise qualitativa demonstrou necessidade de aprofundar e sistematizar a capacitação do pessoal de saúde que atende casos de TBMR. Conclusões. Algumas características do paciente e da equipe de saúde influenciam no êxito do tratamento de casos de TBMR. É preciso fortalecer os conhecimentos dos médicos e profissionais de enfermagem sobre a TBMR e reforçar o seguimento dos pacientes com TBMR que vivem com HIV e os filiados ao sistema de saúde colombiano pelo regime subsidiado, os quais têm menor probabilidade de êxito do tratamento.

Patient- and provider-related factors in the success of multidrug-resistant tuberculosis treatment in Colombia / Factores de éxito del tratamiento de la tuberculosis multidrogorresistente relacionados con el paciente y el personal sanitario en Colombia / Fatores de êxito do tratamento da tuberculose multirresistente relacionados com o paciente e com a equipe de saúde na Colômbia

ABSTRACT Objective. To identify patient- and provider-related factors associated with the success of multidrug-resistant tuberculosis (MDR-TB) treatment in the six municipalities of Colombia with the highest number of MDR-TB cases. Methods. Bivariate and multivariate logistic regressions were used to analyze the association between treatment success (cure or treatment completion) and characteristics of the patients and physicians, nursing professionals, and psychologists involved in their treatment. The importance of knowledge in the management of MDR-TB cases was explored through focus groups with these providers. Results. Of 128 cases of TB-MDR, 63 (49.2%) experienced treatment success. Only 52.9% of the physicians and nursing professionals had satisfactory knowledge about MDR-TB. Logistic regression showed that being HIV negative, being affiliated with the contributory health insurance scheme, being cared for by a male physician, and being cared for by nursing professionals with sufficient knowledge were associated with a successful treatment outcome (p ≤ 0.05). Qualitative analysis showed the need for in-depth, systematic training of health personnel who care for patients with MDR-TB. Conclusions. Some characteristics of patients and healthcare providers influence treatment success in MDR-TB cases. Physicians' and nurses' knowledge about MDR-TB must be improved, and follow-up of MDR-TB patients who are living with HIV and of those affiliated with the subsidized health insurance scheme in Colombia must be strengthened, as these patients have a lower likelihood of a successful treatment outcome.

RESUMEN Objetivo. Identificar los factores asociados con el éxito del tratamiento de tuberculosis multidrogorresistente (TB-MDR) relacionados con los pacientes y el personal sanitario en seis municipios de Colombia con mayor número de casos. Métodos. Mediante regresiones logísticas bifactorial y multifactorial se analizó la asociación entre el tratamiento exitoso (curación o cumplimiento del tratamiento) y las características de los pacientes, y de los médicos, profesionales de enfermería y psicólogos vinculados al tratamiento. Se exploró la importancia del conocimiento en el manejo de los casos de TB-MDR mediante grupos focales con esos profesionales. Resultados. De los 128 casos con TB-MDR, 63 (49,2%) tuvieron un tratamiento exitoso. Solo 52,9% de los médicos y profesionales de enfermería tenía conocimientos satisfactorios sobre TB-MDR. La regresión logística mostró que ser negativo al VIH, estar afiliado al régimen de aseguramiento de salud contributivo, estar atendido por un médico del sexo masculino y por profesionales de enfermería con conocimientos suficientes se asociaron con un desenlace exitoso del tratamiento (p ≤ 0,05). El análisis cualitativo mostró la necesidad de profundizar y sistematizar la capacitación del personal sanitario que atiende los casos de TB-MDR. Conclusiones. En el éxito del tratamiento de los casos de TB-MDR influyen algunas características de los pacientes y el personal sanitario. Se requiere fortalecer los conocimientos sobre TB-MDR de médicos y enfermeros, y reforzar el seguimiento de los pacientes con TB-MDR positivos al VIH y de los que pertenecen al régimen subsidiado, dada su menor probabilidad de éxito al tratamiento.

RESUMO Objetivo. Identificar os fatores associados ao êxito do tratamento da tuberculose multirresistente (TBMR) relacionados ao paciente e à equipe de saúde nos seis municípios da Colômbia com o maior número de casos. Métodos. Mediante regressão logística bifatorial e multifatorial, analisou-se a associação entre o êxito do tratamento (cura ou completude do tratamento) e as características dos pacientes e dos médicos, profissionais de enfermagem e psicólogos envolvidos neste. Explorou-se a importância do conhecimento no manejo de casos de TBMR mediante grupos focais com os mesmos profissionais. Resultados. Dos 128 casos de TBMR, 63 (49.2%) lograram êxito no tratamento. Somente 52.9% dos médicos e profissionais de enfermagem tinham conhecimentos satisfatórios sobre TBMR. A regressão logística demonstrou que soronegatividade para o HIV, cobertura pelo sistema de saúde sob o regime de contribuinte, atendimento por um médico do sexo masculino e atendimento por profissionais de enfermagem com conhecimento suficiente foram fatores associados ao êxito do tratamento (p ≤ 0,05). A análise qualitativa demonstrou necessidade de aprofundar e sistematizar a capacitação do pessoal de saúde que atende casos de TBMR. Conclusões. Algumas características do paciente e da equipe de saúde influenciam no êxito do tratamento de casos de TBMR. É preciso fortalecer os conhecimentos dos médicos e profissionais de enfermagem sobre a TBMR e reforçar o seguimento dos pacientes com TBMR que vivem com HIV e os filiados ao sistema de saúde colombiano pelo regime subsidiado, os quais têm menor probabilidade de êxito do tratamento.

Factores de éxito del tratamiento de la tuberculosis multidrogorresistente relacionados con el paciente y el personal sanitario en Colombia / Patient- and provider-related factors in the success of multidrug tuberculosis treatment in Colombia / Fatores de êxito do tratamento da tuberculose multirresistente relacionados com o paciente e com a equipe de saúde na Colômbia

RESUMEN Objetivo. Identificar los factores asociados con el éxito del tratamiento de tuberculosis multidrogorresistente (TB-MDR) relacionados con los pacientes y el personal sanitario en seis municipios de Colombia con mayor número de casos. Métodos. Mediante regresiones logísticas bifactorial y multifactorial se analizó la asociación entre el tratamiento exitoso (curación o cumplimiento del tratamiento) y las características de los pacientes, y de los médicos, profesionales de enfermería y psicólogos vinculados al tratamiento. Se exploró la importancia del conocimiento en el manejo de los casos de TB-MDR mediante grupos focales con esos profesionales. Resultados. De los 128 casos con TB-MDR, 63 (49,2%) tuvieron un tratamiento exitoso. Solo 52,9% de los médicos y profesionales de enfermería tenía conocimientos satisfactorios sobre TB-MDR. La regresión logística mostró que ser negativo al VIH, estar afiliado al régimen de aseguramiento de salud contributivo, estar atendido por un médico del sexo masculino y por profesionales de enfermería con conocimientos suficientes se asociaron con un desenlace exitoso del tratamiento (p ≤ 0,05). El análisis cualitativo mostró la necesidad de profundizar y sistematizar la capacitación del personal sanitario que atiende los casos de TB-MDR. Conclusiones. En el éxito del tratamiento de los casos de TB-MDR influyen algunas características de los pacientes y el personal sanitario. Se requiere fortalecer los conocimientos sobre TB-MDR de médicos y enfermeros, y reforzar el seguimiento de los pacientes con TB-MDR positivos al VIH y de los que pertenecen al régimen subsidiado, dada su menor probabilidad de éxito al tratamiento.

ABSTRACT Objective. To identify patient- and provider-related factors associated with the success of multidrug-resistant tuberculosis (MDR-TB) treatment in the six municipalities of Colombia with the highest number of MDR-TB cases. Methods. Bivariate and multivariate logistic regressions were used to analyze the association between treatment success (cure or treatment completion) and characteristics of the patients and physicians, nursing professionals, and psychologists involved in their treatment. The importance of knowledge in the management of MDR-TB cases was explored through focus groups with these providers. Results. Of 128 cases of TB-MDR, 63 (49.2%) experienced treatment success. Only 52.9% of the physicians and nursing professionals had satisfactory knowledge about MDR-TB. Logistic regression showed that being HIV negative, being affiliated with the contributory health insurance scheme, being cared for by a male physician, and being cared for by nursing professionals with sufficient knowledge were associated with a successful treatment outcome (p ≤ 0.05). Qualitative analysis showed the need for in-depth, systematic training of health personnel who care for patients with MDR-TB. Conclusions. Some characteristics of patients and healthcare providers influence treatment success in MDR-TB cases. Physicians' and nurses' knowledge about MDR-TB must be improved, and follow-up of MDR-TB patients who are living with HIV and of those affiliated with the subsidized health insurance scheme in Colombia must be strengthened, as these patients have a lower likelihood of a successful treatment outcome.

RESUMO Objetivo. Identificar os fatores associados ao êxito do tratamento da tuberculose multirresistente (TBMR) relacionados ao paciente e à equipe de saúde nos seis municípios da Colômbia com o maior número de casos. Métodos. Mediante regressão logística bifatorial e multifatorial, analisou-se a associação entre o êxito do tratamento (cura ou completude do tratamento) e as características dos pacientes e dos médicos, profissionais de enfermagem e psicólogos envolvidos neste. Explorou-se a importância do conhecimento no manejo de casos de TBMR mediante grupos focais com os mesmos profissionais. Resultados. Dos 128 casos de TBMR, 63 (49.2%) lograram êxito no tratamento. Somente 52.9% dos médicos e profissionais de enfermagem tinham conhecimentos satisfatórios sobre TBMR. A regressão logística demonstrou que soronegatividade para o HIV, cobertura pelo sistema de saúde sob o regime de contribuinte, atendimento por um médico do sexo masculino e atendimento por profissionais de enfermagem com conhecimento suficiente foram fatores associados ao êxito do tratamento (p ≤ 0,05). A análise qualitativa demonstrou necessidade de aprofundar e sistematizar a capacitação do pessoal de saúde que atende casos de TBMR. Conclusões. Algumas características do paciente e da equipe de saúde influenciam no êxito do tratamento de casos de TBMR. É preciso fortalecer os conhecimentos dos médicos e profissionais de enfermagem sobre a TBMR e reforçar o seguimento dos pacientes com TBMR que vivem com HIV e os filiados ao sistema de saúde colombiano pelo regime subsidiado, os quais têm menor probabilidade de êxito do tratamento.

Tuberculosis por Mycobacterium bovis en trabajadores de fincas en saneamiento para tuberculosis bovina, de Antioquia, Boyacá y Cundinamarca / Tuberculosis caused by Mycobacterium bovis in workers of bovine tuberculosis sanitation farms in Antioquia, Boyacá and Cundinamarca

RESUMEN Objetivo Realizar la vigilancia epidemiológica clásica y molecular de la tuberculosis (TB) humana causada por Mycobacterium bovis en manipuladores de la cadena de producción bovina en fincas con bovinos PPD positivos de los Departamentos de Antioquia, Boyacá y Cundinamarca en un periodo de un año. Métodos Se visitaron las fincas ganaderas, con bovinos o bufalinos PPD positivos de los departamentos de estudio según información del Programa Nacional de Tuberculosis bovina del ICA. Se recolectó la información socio-demográfica y a los factores de riesgo para adquirir TB asociados a la ocupación a través de una encuesta aplicada a todos los trabajadores de las fincas visitadas. Se recolectaron muestras de esputo luego de haber obtenido un consentimiento informado. Los esputos fueron sometidos a pruebas microbiológicas y moleculares para la identificación de los miembros del complejo M. tuberculosis. Resultados Se visitaron 33 fincas ganaderas y se recolectó información para 164 trabajadores de la cadena de producción bovina. Se identificaron como posibles factores de riesgo para el desarrollo de TB la permanencia en la finca PPD positiva por más de un año, desconocimiento de la enfermedad y presencia de posibles reservorios como perros y gatos. No se encontraron casos de TB por M. bovis ni por M. tuberculosis en los trabajadores de las fincas visitadas. Conclusión No se documentaron casos de la enfermedad por este agente zoonótico en los departamentos de Antioquia, Boyacá y Cundinamarca.(AU)

ABSTRACT Objective To perform classic and molecular epidemiological surveillance of human tuberculosis caused by Mycobacterium bovis in bovine supply chains at farms with PPD positive bovines in the departments of Antioquia, Boyacá and Cundinamarca during a one-year period. Methods Livestock farms with PPD positive bovines or buffalos were visited in the study departments according to information obtained in the "Programa Nacional de Tuberculosis bovina" (National program on bovine Tuberculosis) released by ICA (Colombian Agriculture and Livestock Institute). Data on socio-demographic information and tuberculosis risk factors associated to the occupation were collected through a survey applied to all workers at the visited farms. Sputum samples were obtained after informed consent. The sputa underwent microbiological and molecular testing to identify members of the M. tuberculosis complex. Results Thirty-three livestock farms were visited and information of 164 workers from the bovine supply chain was collected. Staying in a PPD positive farm for more than a year, ignorance about the disease and the presence of possible vectors, like dogs and cats, were identified as possible risk factors for developing tuberculosis. No cases of tuberculosis caused by M. bovis or M. tuberculosis in workers of the visited farms were found. Conclusion No cases of the disease caused by this zoonotic agent were documented in the departments of Antioquia, Boyacá and Cundinamarca.(AU)

[Tuberculosis caused by Mycobacterium bovis in workers of bovine tuberculosis sanitation farms in Antioquia, Boyacá and Cundinamarca]. / Tuberculosis por Mycobacterium bovis en trabajadores de fincas en saneamiento para tuberculosis bovina, de Antioquia, Boyacá y Cundinamarca.

OBJECTIVE: To perform classic and molecular epidemiological surveillance of human tuberculosis caused by Mycobacterium bovis in bovine supply chains at farms with PPD positive bovines in the departments of Antioquia, Boyacá and Cundinamarca during a one-year period. METHODS: Livestock farms with PPD positive bovines or buffalos were visited in the study departments according to information obtained in the "Programa Nacional de Tuberculosis bovina" (National program on bovine Tuberculosis) released by ICA (Colombian Agriculture and Livestock Institute). Data on socio-demographic information and tuberculosis risk factors associated to the occupation were collected through a survey applied to all workers at the visited farms. Sputum samples were obtained after informed consent. The sputa underwent microbiological and molecular testing to identify members of the M. tuberculosis complex. RESULTS: Thirty-three livestock farms were visited and information of 164 workers from the bovine supply chain was collected. Staying in a PPD positive farm for more than a year, ignorance about the disease and the presence of possible vectors, like dogs and cats, were identified as possible risk factors for developing tuberculosis. No cases of tuberculosis caused by M. bovis or M. tuberculosis in workers of the visited farms were found. CONCLUSION: No cases of the disease caused by this zoonotic agent were documented in the departments of Antioquia, Boyacá and Cundinamarca.