TY - T1 - Epidemiology and stress responses of Listeria monocytogenes SN - / UR - URN:ISBN:978-952-10-8840-7; http://hdl.handle.net/10138/39303 T3 - A1 - Markkula, Annukka A2 - PB - Helsingin yliopisto Y1 - 2013 LA - en AB - Listeria monocytogenes causes potentially fatal illness to susceptible people and is found in various foods. It typically enters processed foods via a contaminated processing environment, in which it may have persisted for years. To study the role of raw material as a potential source of contamination of food processing plants by L. monocytogenes, the prevalence and genetic diversity of this species in tonsils of pigs and in raw fish was examined. A total of 14% and 4% of tonsils of pigs and raw... VO - IS - SP - OP - KW - eläinlääketiede N1 - PP - ER -