Research – German testing finds Listeria and E. coli in raw milk

Food Safety News

Listeria and E. coli have been found during testing of unpasteurized, raw milk from farms in Germany.

From 2020 to 2022, the Chemical and Veterinary Investigation Office (CVUA) in Stuttgart tested 54 raw milk samples from vending machines for a range of agents.

Parameters examined included somatic cell count, total germ count, spoilage organisms, hygiene indicator germs such as Enterobacteriaceae and E. coli, and pathogens like Salmonella, Listeria, Campylobacter, and Shiga toxin-producing E. coli (STEC).

The sale of raw milk is mostly prohibited but it can be sold directly on the farm via self-service vending machines. The producers should put up notices telling the consumers to boil raw milk before consumption.

Some findings were positive as 30 samples were compliant but 24 had issues. Results highlight the importance of regular cleaning of milking machines, pipes, and tanks at dairy farms, said scientists. Insufficient cooling can also lead to contamination of raw milk.

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