DVM Sanna Hellström’s academic dissertation was presented, with the permission of the Faculty of Veterinary Medicine, University of Helsinki, for public examination in Auditorium Arppeanum, Helsinki on 9th September 2011.

Title of thesis is “Contamination routes and control of Listeria monocytogenes in food production”. The opponent was docent, DVM, PhD Sebastian Hielm from Ministry of Agriculture and Forestry and the custos was professor Hannu Korkeala.