API 20E and invA PCR were evaluated for the identification of Salmonella enterica isolates from swine farms. API 20E had the highest agreement with other tests at the 99.9% likelihood level. Both tests had 100% sensitivity and 96% specificity compared to 16S rRNA sequencing. Compared to serotyping, both tests had 96% sensitivity; specificity was 86% for API 20E and 79% for invA PCR.
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Nucera et al. (2006) studied this question.
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