Human pathogenic bacteria and their contamination routes on dairy farms and in raw milk


The project involves monitoring of the occurrence of Listeria monocytogenes, STEC and campylobacteria in animal faeces, barn environments, milking machines and the related filters, and in tank milk on three farms during the course of a year. In addition, the occurrence of the aforementioned pathogenic bacteria in raw milk sold in retail outlets is being investigated and an analysis is being conducted of possible contamination factors during milking and animal husbandry.


The aim of the project is to investigate the risks posed to consumers by the occurrence of campylobacteria, STEC bacteria and Listeria monocytogenes in raw cow milk for direct or retail sale, and the nature of contaminations on dairy cattle farms due to these bacteria.


raw milk, dairy cattle, Listeria monocytogenes, campylobacteria, STEC,

Responsible project leader:

Lindström, Miia, Professor in industrial milk hygiene, DVM Ph.D. (University of Helsinki)

Person at Finnish Food Authority responsible for the project: 

Hakkinen, Marjaana, Senior Researcher, Ph.D., Food and Feed Microbiology Research Unit

In cooperation with:

Department of Food Hygiene and Environmental Health in the Faculty of Veterinary Medicine at the University of Helsinki

Project status:

In progress

Year of commencement:


Year of completion:


Project financed by: 

The Ministry of Agriculture and Forestry (1879/312/2012)

Finnish Food Authority project code:



Page last updated 10/5/2018