sodC1 encodes
a periplasmic Cu/Zn superoxide dismutase, and was found
only in certain strains of the most highly pathogenic Salmonella
serotypes (Fang et al. 1999). In total, 34.0% of the isolates in our
study harbored sodC1, including all S. Typhimurium, S. Enteritidis,
and S. Weltevreden isolates.