Study On Prevalence Of Listeria Species In Raw Milk And Cottage Cheese In Debre Zeit Ethiopia.

A cross-sectional study of Listeria species was conducted on bulk raw milk, farm raw milk and cottage cheese. A total of 400 samples consisting of 100 farm raw milk, 100 bulk raw milk and 200 cottage cheese samples were collected. Out of these samples, 49 (12.25%) were positive for Listeria . The bulk raw milk was the most contaminated with Listeria species with an overall prevalence of 27%. Sixteen samples(16%) of farm raw milk, 6 (3%) of cottage cheese were positive for Listeria.

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