Surveillance and analysis on food contamination by Listeria monocytogenes in Hohhot province from 2010 to 2013

Objective In order to provide a scientific evidence for health supervision,an investigation on Listeria monocytogenes contamination in foods was completed in Hohhot. Method The investigation was performed according to National Surveillance of Food borne Pathogens Manual and GB / T 4789-2010. Results 744 samples of 8 kinds of foods were examined.10(1.34%) Listeria monocytogenes isolates were identified.The positive rate in meat products was 4.71%,in unpacked foods was 1.63%,and in farmers market foods was 2.56%. Conclusions Test results signify that foods,particularly the meat products and unpacked food, in Hohhot were contaminated by L. monocytogenes. The positive rate of L.monocytogenes in the foods that had been got from farmers market was the highest.Food hygiene supervision department should increase supervision of raw meat and unpacked foods and strengthen the management of hygiene of farmers market.