Prevalence of Listeria monocytogenes , Campylobacter jejuni , Yersinia enterocolitica , and Salmonella in Bulk Tank Milk: Risk Factors and Risk of Human Exposure

Barton W Rohrbach; F Ann Draughon; P Michael Davidson; Stephen P Oliver

doi:10.4315/0362-028X-55.2.93

Prevalence of Listeria monocytogenes , Campylobacter jejuni , Yersinia enterocolitica , and Salmonella in Bulk Tank Milk: Risk Factors and Risk of Human Exposure

J Food Prot. 1992 Feb;55(2):93-97. doi: 10.4315/0362-028X-55.2.93.

Authors

Barton W Rohrbach¹, F Ann Draughon², P Michael Davidson², Stephen P Oliver³

Affiliations

¹ Department of Rural Practice, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee 37996.
² Department of Food Technology and Science, University of Tennessee, Knoxville, Tennessee 37996.
³ Department of Animal Science, Institute of Agriculture, University of Tennessee, Knoxville, Tennessee 37996.

PMID: 31071770
DOI: 10.4315/0362-028X-55.2.93

Abstract

Milk samples (n=292) from farm bulk tanks were analyzed for selected bacteria. Frequency of bacterial isolation was Listeria monocytogenes 12 (4.1%), Campylobacter jejuni 36 (12.3%), Yersinia enterocolitica 44 (15.1%), and Salmonella 26 (8.9%). The presence of one or more selected bacteria was not associated with grade classification of dairy, barn type, milking hygiene, reported incidence of clinical mastitis among cows, or the number of cows on the farm. Consumption of raw bulk milk was reported by 68/195 (34.9%) dairy producers, and of bulk tanks from which raw milk was consumed, 17/68 (25%) were contaminated with one or more species of pathogenic bacteria.