Design and performance of a new medium for the quantitative recovery of Staphylococcus aureus from recreational waters

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Abstract
Several reports have suggested that staphylococci, and especially Staphylococcus aureus, are useful indicators of pollution of recreational waters. The lack of a selective, accurate and reliable recovery system for the quantification of Staph. aureus from water has been the principal obstacle to the evaluation of their use as indicators. In this study, several inhibitory substances and different nutrient sources have been evaluated for the formulations of a new selection medium. The medium designed, BFR-0 agar, recovers more than 75% of staphylococci and allows Staph. aureus to be identified.