An unusual sequel to imported Salmonella Zanzibar

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Abstract
In Aug., 1980, a rare serotype [S. zanzibar] was isolated in north Scotland, UK, from a man home on leave from Malaysia. In Dec., S. zanzibar was isolated from a bulk milk sample taken at a nearby dairy farm. No illness occurred among milking cows which had been brought inside from pasture in mid-Oct. Since 1972, a variety of different Salmonella serotypes had been identified in cattle, milk and other samples at this farm, with seagulls being implicated as the vector transmitting infection from the sewage of a local town. Although water from this source has not been used in recent years for drinking by cattle, it is utilized for washing floors within the dairy premises. Since 1979, following an outbreak affecting consumers, all milk produced at the farm has been pasteurized.