title: Evaluation of a colour test for rapid detection of Salmonella.
abstract: The performance of a colour test (Wellcolex) for rapid detection of the most frequently isolated O serogroups of salmonella (A, B, C, D, E/G) and the Vi antigen was evaluated using colonies grown on enteric differential agar media and in selenite broth. The test had excellent sensitivity (100%) and specificity (100%) with colonies taken directly from primary culture plates. Initial tests in selenite broth showed limited sensitivity (62.1%) but by using high quality media and modifying the inoculation procedure, sensitivity was greatly improved (99%).
authors.affiliation: Sección de Microbiología, Instituto Nacional de la Salud, Madrid, Spain.
authors.forename: B
authors.initials: B
authors.lastname: Orden
authors.forename: A
authors.initials: A
authors.lastname: Franco
authors.forename: E
authors.initials: E
authors.lastname: Juárez
authors.forename: A
authors.initials: A
authors.lastname: González
authors.forename: L
authors.initials: L
authors.lastname: Caravaca
mesh_terms: D001431:Bacteriological Techniques; D003124:Colorimetry / Q000379:methods*; D006801:Humans; D012475:Salmonella / Q000302:isolation & purification*; D012680:Sensitivity and Specificity; D013045:Species Specificity; D013997:Time Factors