Phage typing and clonal analysis of Salmonella Heidelberg strains isolated from animals and other sources from Minnesota (USA) and Germany

Salmonella Heidelberg isolates has become an emerging pathogen during the 80s in the United States (Martin et al., 1989). Approximately 60% of human cases reported to the CDC in 1995 were caused by only four serovars, including S. Enteridis (24,7%), S. Typhimurium (23,5%), S. Newport (6,2%) and S. Heidelberg (5,1%), (CDC, Salmonella surveillance) and were frequently isolated from chicken and pork (Sawari et al., 2001)