Abstract
Salmonella Typhimurium was isolated from a faecal sample from a cow in a Swedish dairy herd after calving. When investigations were undertaken in the herd, Salmonella Thompson was isolated from heifers on a separate pasture, and when these heifers were brought into the herd S Thompson spread rapidly. Control strategies managed to rid the herd of the S Typhimurium infection and the prevalence of S Thompson was at first substantially reduced. There was a rapid increase in its prevalence when the animals were let out to pasture and this development eventually led to the depopulation of the entire herd.
MeSH terms
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Animal Husbandry
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Animals
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Cattle
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Cattle Diseases / epidemiology*
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Cattle Diseases / microbiology
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Cattle Diseases / prevention & control
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Cattle Diseases / transmission*
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Disease Outbreaks / veterinary*
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Euthanasia, Animal
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Feces / microbiology
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Female
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Male
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Prevalence
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Salmonella Infections, Animal / epidemiology*
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Salmonella Infections, Animal / microbiology
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Salmonella Infections, Animal / prevention & control
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Salmonella Infections, Animal / transmission*
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Salmonella enterica / classification
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Salmonella enterica / isolation & purification*
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Salmonella typhimurium / isolation & purification
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Sweden / epidemiology