The presence of the same virulence genes in human clinical samples demonstrates the dissemination and distribution of virulence genes, although the origin of the Salmonella that infected the patients was not known because no background information had been obtained from patients about possible sources of infection with Salmonella. Salmonella isolates detected from Brazilian imported chicken meat also demonstrated the presence of all the virulence genes screened during the study, with spiC and pipD genes as the most prevalent, having a prevalence rate of 83% and 87% respectively. Here, SPIC is linked to infection.