Human brucellosis in a non-susceptible host: a case report

Clinical human brucellosis is quite rare in India, that too in an non susceptible host. This report describes a case of clinical human brucellosis in India. This case involved a 36 years old male, a professor in an Engineering college. He presented with complaints of fever for 4 months with myalgia, generalized tiredness, loss of weight and loss of appetite. On evaluation, total counts and ESR was elevated and all other investigations were normal. Based on history, common causes like occult tuberculosis or autoimmune diseases were considered. But, blood cultures grew Brucella melitensis in all 2 samples and a diagnosis of brucellosis was made. He was treated with Rifampicin and Doxycycline. Suspicion of brucellosis in this patient is low because the patient has no history of contact with animals, consumption of unpasteurized milk or occupational exposure. So, the health care practitioners should be aware of this possibility of this zoonotic infection as a differential diagnosis in patients with nonspecific symptoms and unexplained prolonged fever.

Leptospirosis humana: un abordaje epidemiológico desde los factores ambientales / Human leptospirosis: an epidemiologic approach from environmental factors

Introducción: la leptospirosis es una enfermedad infecciosa zoonótica. La vía por la que el hombre puede enfermar está relacionada con el medio natural y su calidad. Objetivo: describir aspectos epidemiológicos de la leptospirosis y la influencia de los factores ambientales en la incidencia de la enfermedad. Métodos: se realizó una revisión bibliográfica relacionada con las formas clínicas de la enfermedad, diagnóstico y tratamiento preventivo, así como la influencia de los factores ambientales en la incidencia de la enfermedad. Conclusiones: la leptospirosis es una enfermedad en la que el médico de la atención primaria ejerce un papel fundamental al tener un pensamiento epidemiológico y poder realizar un diagnóstico oportuno ante la sospecha de un paciente con síntomas clínicos; y la identificación de grupos riesgo; para orientar las medidas de prevención relacionadas con la enfermedad, debido a que el agente causal utiliza el medio ambiente natural o creado por el hombre con condiciones favorables para sobrevivir y pasar al huésped susceptible(AU)

Introduction: Leptospirosis is an infectious zoonotic disease. The way the human being can become sick is related to the natural environment and its quality. Objective: To describe epidemiological aspects of leptospirosis and the influence of environmental factors on the disease incidence. Methods: A bibliographic review was carried out considering the disease's clinical forms, diagnosis and preventive treatment, as well as the influence of environmental factors on the disease incidence. Conclusions: Leptospirosis is a disease in which the primary care physician plays a fundamental role in having an epidemiological approach and being able to make a timely diagnosis when a patient is suspected with clinical symptoms, and the identification of risk groups, to guide the prevention measures related to the disease, because the causal agent uses the natural or man-made environment with favorable conditions to survive and pass to the susceptible host(AU)

Detection of macrophages infected with Mycobacterium avium subspecies paratuberculosis in a cow with clinical stage IV of Johne's disease. A case report / Detección de macrófagos infectados con Mycobacterium avium subspecies paratuberculosis en una vaca en fase clínica IV de la enfermedad de Johne. Reporte de un caso / Detecção de macrófagos infectados com Mycobacterium avium paratuberculosis subespécie em uma vaca com uma fase clínica IV da doença de Johne. Um relato de caso

Anamnesis: a six-year-old milking Holstein cow (Bos taurus taurus) was diagnosed with stage IV Johne's Disease (JD). Clinical and Laboratory findings: the cow suffered intermittent diarrhea during 6 months with no response to antibiotic treatment. Consequently, the cow was subjected to euthanasia. Treatment approach: antemortem milk and peripheral blood samples and postmortem colon, mediastinic, mesenteric lymph nodes, and spleen samples were processed for macrophages isolation. Total DNA was extracted from macrophages and used to diagnose IS900 of Mycobacterium avium paratuberculosis (MAP) through real time PCR. The MAP IS900 segment was successfully amplified from cells of all samples, indicating that these cells were MAP-infected macrophages. Conclusion: macrophages of cows suffering from JD can be used for amplification of the MAP IS900 segment.

Anamnesis: una vaca Holstein de 6 años de edad (Bos taurus taurus) presentó sintomatología de la fase IV de la enfermedad de Johne. Hallazgos clínicos y de laboratorio: la vaca presentó diarrea intermitente durante 6 meses sin respuesta al tratamiento con antibióticos. En consecuencia, la vaca fue sometida a eutanasia. Esquema de tratamiento: muestras de leche y de sangre periférica se tomaron ante-mortem; muestras de la mucosa del intestino, bazo y linfonodos mediastínico y mesentérico, se tomaron post-mortem, todas para aislamiento de macrófagos. El ADN total de los macrófagos fue usado para la amplificación del segmento IS900 de Mycobacterium avium paratuberculosis (MAP) por PCR en tiempo real. Conclusión: los macrófagos de vacas con la enfermedad de Johne pueden ser usados para la amplificación del segmento IS900 de MAP.

Anamnese: uma vaca Holstein com 6 anos de idade (Bos taurus taurus) apresentou os sintomas da fase IV da doença de Johne. Achados clínicos e laboratoriais: a vaca teve diarreia intermitente por seis meses sem resposta ao tratamento com antibióticos. Por conseguinte, a vaca foi submetida à eutanásia. Abordagem de tratamento: amostras de leite e de sangue periférico foram retiradas ante-mortem, enquanto as amostras da mucosa intestinal, baço e linfonodos mesentéricos e mediastinais foram tomadas todas post-mortem para o isolamento de macrófagos. O ADN total de macrófagos foi utilizado para amplificação do segmento IS900 do Mycobacterium avium paratuberculosis (MAP) por PCR em tempo real. Conclusão: macrófagos isolados a partir de vacas com doença de Johne podem ser utilizados para a amplificação da segmento IS900 do MAP.