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Noticias de diciembre de 2013

27 de diciembre de 2013

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Veterinary Microbiology

Non-pet dogs as sentinels and potential synanthropic reservoirs of tick-borne and zoonotic bacteria

Veterinary Microbiology publica este artículo de investigación

Blood samples were collected from 100 shepherd dogs, 12 hunting dogs and 14 stray dogs (apparently healthy) in southern Hungary to screen for the presence of emerging tick-borne pathogens. Based on real-time PCR results, 14 dogs (11%) had single or dual haemoplasma infection, and a same number of samples were positive for Anaplasma phagocytophilum. In one sample Coxiella burnetii was molecularly identified, and 20.3% of dogs seroconverted to the Q fever agent. Rickettsaemia (sensu stricto) was also detected in one animal. This is the first molecular evidence of autochthonous infection of dogs … Leer más

27 de diciembre de 2013

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Veterinary Microbiology

Food-borne zoonotic pathogens and antimicrobial resistance of indicator bacteria in urban wild boars in Barcelona, Spain

Veterinary Microbiology publica este artículo de investigación

Wildlife is increasingly abundant in urban environments, but little is known about the zoonotic pathogens carried by these populations. Urban wild boars are of particular concern because this species is well-known as a pathogen reservoir, and thus, we studied selected zoonotic pathogens in urban wild boars in Barcelona, Spain (n=41). Salmonella enterica was found in 5.00% (95% CI 0.61-16.91) and Campylobacter coli in 4.88% (95% CI 0.6-16.53) of the animals. E. coli O157:H7 and C. jejuni were not found. Other thermophilic Campylobacter were moderately prevalent (19.51%, 95% CI 8.82-34.87). Addi… Leer más

27 de diciembre de 2013

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Veterinary Microbiology

Septicaemic pasteurellosis in free-range pigs associated with an unusual biovar 13 of Pasteurella multocida

Investigación publicada en Veterinary Microbiology

Biochemical profiles, PFGE typing and MLST analysis were used to investigate an outbreak of septicaemic pasteurellosis in a free-range pig farm in Spain. Signs of coughing, dyspnoea and a visible inflammation of the ventral area of the neck (jowl), which acquired a cyanotic and necrotic appearance, were the characteristic findings in affected animals, associated with a high morbidity (70%) and case mortality (95%). Diffuse, haemorrhagic and fibrinous pleuroneumonia and acute, focally extensive and haemorrhagic myositis and panniculitis were observed in the histopathological analysis from three… Leer más

16 de diciembre de 2013

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Aspectos técnicos de importancia en el diagnóstico de la tuberculosis

Comunicación oral en Programas Nacionales de Erradicación de Enfermedades (Tuberculosis y Brucelosis) en Ganado Bovino. Una apuesta de futuro

11 de diciembre de 2013

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Grado de Biología (UCM)

Micobacterias y Bioseguridad en el Laboratorio. Asignatura de Microbiología

Comunicación oral en Grado de Biología (UCM)

1 de diciembre de 2013

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Investigation of risk factors associated with infections caused by small ruminant lentiviruses

Bulletin of the Veterinary Institute in Pulawy publica este artículo de investigación

An epidemiological study was conducted to identify risk factors related to small ruminant lentivirus (SRLV) infection in the central region of Spain. Between October 1998 and October 2000, a total of 194 sheep from 10 flocks and 163 goats from three flocks were tested for SRLV antibodies, resulting in 65.5% and 8.0% of seroprevalence, respectively. The relationship between differences in prevalence of SRLV, geographical location of the flock, and possible factors related to the flock that could enhance transmission were studied. Results of multivariable analysis showed an association between S… Leer más

1 de diciembre de 2013

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Aquaculture (Amsterdam, Netherlands)

Characterization of flavobacteria possibly associated with fish and fish farm environment. Description of three novel Flavobacterium species: Flavobacterium collinsii sp. nov., Flavobacterium branchiarum sp. nov., and Flavobacterium branchiicola sp. nov.

Artículo de investigación publicado en Aquaculture (Amsterdam, Netherlands)

Members of the genus Flavobacterium are widely distributed microorganisms that can be recovered from a wide variety of environments. There has been an increase in the number of species isolated from fish or fish farm environments, some of them possibly associated with disease. Fourteen Flavobacterium-like isolates recovered from gills, surface of eggs and liver of rainbow trout were characterized by a polyphasic study that included a deep phenotypic, chemotaxonomic, genotypic and phylogenetic analysis. Comparative 16S rRNA gene analysis revealed that isolates represented three separate phyloge… Leer más

1 de diciembre de 2013

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Research in Veterinary Science

Ante-mortem diagnosis of caprine tuberculosis in persistently infected herds: Influence of lesion type on the sensitivity of diagnostic tests

Research in Veterinary Science publica este artículo de investigación

Caprine tuberculosis is a major health problem for goats, and an important zoonosis. Eradication programmes using the comparative skin test are being developed to aid in decreasing the prevalence of infection. However, persistent tuberculosis infections are found in herds subjected to eradication programmes. In the present study a commercial IFN-γ release assay and an experimental ELISA based on MPB70, were evaluated as potential ancillary tests to detect infection. The relationship between the three techniques (skin test, IFN-γ release and ELISA) and histopathological lesions was an… Leer más

1 de diciembre de 2013

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Unmasking subtle differences in the infectivity of microevolved Mycobacterium tuberculosis variants coinfecting the same patient

Artículo de investigación publicado en International Journal of Medical Microbiology

Clonal variants of Mycobacterium tuberculosis can emerge as a result of microevolution phenomena. The functional significance of these subtle genetic rearrangements is normally disregarded. We show that clonal variants from two patients had different infective behaviours in some in vitro cellular infection models but not in others. Microevolution may have a subtle impact on infectivity, but specific experimental conditions are needed to unmask it… Leer más

1 de diciembre de 2013

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Selecciones Avícolas

Salmonella en el sector avícola: situación actual

Artículo de divulgación publicado en Selecciones Avícolas

El género Salmonella está formado por microorganismos ubicuos, con escasas necesidades nutricionales y una gran resistencia medioambiental, cuyo reservorio principal es el tracto intestinal de los animales vertebrados. Son patógenos para el hombre y multitud de especies animales, tanto domésticas como de abasto, dando lugar a diferentes cuadros clínicos que abarcan desde un proceso diarreico leve hasta septicemia y muerte -D’Aoust y Maurer, 2007; Pui y col., 2011; FDA, 2012-. La salmonelosis está considerada como una de las zoonosis bacterianas más importantes, tanto por sus elevadas repercus… Leer más

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