Publications by authors named "L Varela-Castro"

Badgers () are a major tuberculosis (TB) reservoir in Europe, with the potential to transmit infection to cattle. Here we assessed whether a recently described oral tuberculosis vaccine based on heat-inactivated (HIMB) delivered as edible baits, can protect badgers from infection. Eight badgers were given individually five baits, each one consisting of a ball of peanut butter, natural peanut and oat flakes including a dose of the vaccine containing 5 × 10 colony-forming units.

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Non-tuberculous mycobacteria (NTM) circulate between the environment, animals and humans entailing a double concern: their ability to interfere with tuberculosis diagnosis and their potential to cause infections in their hosts. However, published records on NTM infections in animals are still scarce. The aims of the present study were to describe the diversity of NTM circulating among wild and domestic species from Spain and to analyze their implications as potential pathogenic microorganisms or as sources of interferences in the diagnosis of bovine tuberculosis.

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Interactions taking place between sympatric wildlife and livestock may contribute to interspecies transmission of the complex or non-tuberculous mycobacteria, leading to the spread of relevant mycobacterioses or to interferences with the diagnosis of tuberculosis. The aim of this study was to characterize the spatiotemporal patterns of interactions between wildlife and cattle in a low bovine tuberculosis prevalence Atlantic region. Camera traps were set during a one-year period in cattle farms with a history of tuberculosis and/or non-tuberculous mycobacterioses.

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Article Synopsis
  • Tick-borne pathogens (TBPs) are becoming a significant public health issue due to global changes, and wild boars are a major concern as they can host zoonotic pathogens and increase tick populations.
  • A study in the metropolitan area of Barcelona from 2014 to 2016 involved sampling wild boars and identifying tick species, finding a prevalence of Rickettsia spp. in tick pools but none in the wild boar spleens.
  • The findings indicate a transmission risk of Rickettsia spp. to local residents and suggest that while wild boars aren't direct reservoirs for Rickettsia, their presence may increase the risk of human infection through ticks.
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Animal tuberculosis is a worldwide zoonotic disease caused principally by Mycobacterium bovis, a member of the Mycobacterium tuberculosis complex (MTC). In southern Iberian Peninsula, wild reservoirs such as the wild boar, among other factors, have prevented the eradication of bovine tuberculosis. However, most of the studies have been focused on south-central Spain, where the prevalence of tuberculosis is high among wild ungulates and cattle herds.

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