Cetrimide-Nalidixic Acid Agar As A Selective Medium For Pseudomonas Aeruginosa

Abstract
A series of 5358 consecutive swabs from burns were inoculated in duplicate on 0·03 per cent. cetrimide agar and on an agar medium containing 0·02 per cent. cetrimide with 15 μg per ml nalidixic acid. A larger number of swabs yielded Ps. aeruginosa and a smaller number yielded growth of other bacteria on cetrimide-nalidixic acid than on cetrimide agar.

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