Salmonella incidence

In the more recent Chicago outbreak of Salmonellosis, which has been attributed to milk contaminated with a tetracycline-resistant strain of Salmonella typhimurium. there were two deaths verified as resulting from infections with the resistant strain of Salmonel la in 16 284 confirmed cases. If one pools these cases with those cited in the NRDC petition then the incidence of mortality (0.09%) is similar or than that of persons affected by antibiotic-sensitive Salmone1 la (0.21%) also cited by NRDC. Thus the similarity of risks of human infections with resistant and sensitive strains of SaImone 11a agrees with research data obtained in controlled experiments (Smith 15). 

Pentanedione caused sister chromatid exchange increases in Chinese hamster ovary (CHO) cells and an increase in the incidence of micronuclei in peripheral blood eiythroqU es of mice. It was not mutagenic in a Salmonella typhimurium assay. 

Backer HD, Mohle-Boetani JC, Werner SB, Abbott SL, Farrar J, Vugia DJ. High incidence of extra-intestinal infections in a Salmonella Havana outbreak associated with alfalfa sprouts. Public Health Rep 2000 115(4) 339 5. 

Home-made mayonnaise has been implicated in various incidences of food poisoning (Weagant, Bryant, and Bark, 1994 Erickson et al., 1995 Al-Ahmadi, El Bushra, and Al-Zahrani, 1998). The use of vinegar (acetic acid) as an acidulant, at pH 3.6-4.0 has been suggested for prevention of contamination with pathogens, particularly Salmonella. 

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