Background: Salmonella enterica subsp. enterica serovar Cerro (antigenic formula 6,14,18:z4,z23:1,5) is a serovar of the O:18 (K) serogroup. This serovar emerged in the cattle population of the US. In the CDC report of 2011, this serovar ranked third among clinical-nonhuman Salmonella isolates. Hardly reported among human cases, but highly reported among cattle samples; S. Cerro appears to be adapted to cattle. Subtyping by PFGE had identified a single predominant PFGE type on dairy farms in New York and in Pennsylvania. Genomic characteristics associated with the adaptation of S. Cerro to cattle are currently under study at the Cornell Food Safety Laboratory.
Animal reservoir: Cattle and dairy farms. Salmonella Cerro seems to be adapted to bovine, and endemic regions were this serovar is prevalent include New York and Pennsylvania.
Geographical distribution: S. Cerro has been reported mainly in the US (bovine samples), in southern Italy this serovar was described as endemic in 2000.
Outbreaks: Only one outbreak of human salmonellosis due to serovar Cerro has been reported. In addition, one outbreak in dairy cattle was reported, in this outbreak contamination in the farm persisted for almost 2 years.
Year |
Location |
Associated source |
Number of cases |
1985 |
New Mexico |
Beef jerky |
29 |
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