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Salmonella infection and carriage: the importance of dogs and their owners
  1. Finola Leonard, MVB, PhD, MRCVS
  1. School of Veterinary Medicine, University College Dublin, Dublin, Ireland
  1. E-mail: nola.leonard{at}

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Salmonella serotypes are an important cause of disease in people and animals. More than 95,500 cases of salmonellosis in people were reported in the EU in 2011 and Salmonella serotypes accounted for approximately 25 per cent of all foodborne disease outbreaks in that year (EFSA 2013). The cost of these infections is estimated to be in the region of €3 billion. The source of infection with Salmonella enterica in people is considered to be food of animal origin, although infection attributable to consumption of vegetables and other foods also occurs (Behravesh and others 2012). The considerable reduction in salmonellosis cases that has occurred in the EU over recent years is probably due to the success of national control programmes for salmonellosis in poultry (EFSA 2013). Other important foodborne sources of Salmonella in people are pigmeat products and, to a lesser extent, meat products from other animal species. Salmonellae may also be transmitted by direct contact between people and between animals and people (Cummings and others 2012).

Infection with S enterica is an important cause of disease in animals and its effects include diarrhoea, septicaemia and death in farm animal species and horses and abortion in cattle and sheep. Passive surveillance data on the occurrence of salmonellosis in these species is available through disease reports such as those produced by the AHVLA. Considerably fewer data are available on the prevalence and effects …

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