An article by Cox et al. published in the Journal of Food Protection (October 2019, Vol. 82, No. 10, pp. 1688-1696) the researchers found that the choice enrichment medium and rinse procedure cause a bias in the type of Salmonella identified. The inability to assess serovar diversity means that serovars more often associated with human illness may be masked by more abundant Salmonella. Whole carcass pre-enrichment released more serovars than standard rinse aliquot pre-enrichment. Serovar Schwarzengrund was present at higher frequencies in whole carcass pre-enrichment compared with rinse aliquot pre-enrichment, suggesting it adheres more strongly to the carcass. Selective enrichment in Rappaport-Vassiliadis (RV) or tetrathionate (TT) was inhibitory to some serovars. Salmonella Enteritidis is selected in tetrathionate broth; Salmonella Schwarzengrund is selected in Rappaport-Vassiliadis broth. @ https://www.ncbi.nlm.nih.gov/pubmed/31536420
