1. Department of Food Science, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa (ORCID: http://orcid.org/0000-0002-1392-9797 [V.N.]);
2. Division for Epidemiology and Microbial Genomics, National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark
3. Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Via Bianchi 7/9, 25124 Brescia, Italy
4. Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia, Bologna, Italy