In its annual report on the incidence of infections from foodborne pathogens, the CDC noted significant declines in 2005 from the 1996-1998 baseline in illnesses caused by Yersinia, Listeria, Campylobacter, E. coli O157, and Salmonella.

Although Salmonella incidence decreased overall, of the five most common Salmonella serotypes, only the incidence of S. Typhimurium significantly decreased. The estimated incidence of S. Enteritidis increased 25% and S. Heidelberg increased 25%.