Vancomycin Screen Agar is used for the screening of enterococci resistant to vancomycin. Peptic digest of casein, brain heart infusion and peptic digest of animal tissue provide nitrogen, vitamins, minerals and amino acids essential for growth. Dextrose is the fermentable carbohydrate providing carbon and energy. Sodium chloride supplies essential electrolytes for transport and osmotic balance. Disodium phosphate act as a buffer system. FD & Yellow #5 Dye is inert and improve the visual identification in the medium. Enterococci are known to be major causes of infections. Commonly, they infect the urinary tract, abdomen, and bile tract. Enterococcus faecalis cause 80-90% of the infections produced by enterococci and Enterococcus faecium the remaining 10-20% of the infections. Enterococci are the fourth cause of hospital infections and hence it is important to know the adequate treatment. With this medium you can find out whether the enterococci are resistant or not to vancomycin.
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