biotical Yersinia enterocolica O:9 card is a coloured chromatographic immunoassay test for the qualitative detection of Yersinia enterocolica O:9 in stool samples and Yersinia enterocolica O:9 suspected colonies in stool culture. Thanks to its easy handling and high sensitivity, the healthcare professional will be able to make a presumptive diagnosis of Yersinia enterocolica O:9 infection and it could be used to identify suspected Yersinia enterocolica O:9 isolates from selective media (stool culture).