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Lett Appl Microbiol. 1995 Jan;20(1):57-60.

The incidence, numbers and types of Listeria monocytogenes isolated from farm bulk tank milks.

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1
Microbiology Unit, SAC-Aberdeen, UK.

Abstract

Bulk tank milk from 160 producers was tested for Listeria monocytogenes at three monthly intervals over 1 year. Twenty-five producers were positive, most on a single occasion, only seven were positive on three or more of the four samplings. Listeria monocytogenes numbers were low, usually < 1 ml-1, the highest was 35 ml-1. All isolates were serotype 1, the use of multilocus enzyme electrophoresis on representative isolates gave nine different electrophoretic types, two have been associated with listeriosis in humans or animals, a further two had only been isolated from one other source (silage or faeces), while the majority (5) were unique to milk.

[Indexed for MEDLINE]

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