Abstract

Salmonellosis is a commonly encountered disease of cattle. Of the many serotypes of Salmonella known to exist, Salmonella typhimurium and S. dublin are the two most frequently isolated from cattle. Salmonella dublin is isolated commonly from cattle in states west of the Rocky Mountains. Reports of isolations of S. dublin from states east of the Rockies are increasing.2,4 Salmonella dublin is also isolated commonly in Europe and South Africa. Unlike S. typhimurium, which shows no special affinity for a particular host, S. dublin is host-adapted for cattle. While other animal species can be infected with S. dublin, cattle account for approximately 96% of the isolations from animals. This host-adaptation for cattle has special implications regarding epidemiology and control measures. The purpose of this presentation is to give an overview of the current spectrum of S. dublin infections in dairy cattle in California.

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