Charcoal Agar with 10% Horse Blood & Cephalexin
This is one of two media generally used for the selective isolation of Bordetella pertussis. The medium is made selective by the inclusion of Cephalexin, to suppress the unwanted naso-pharyngeal flora often present in specimens submitted for the isolation of Bordetella pertussis, and further enriched with 10% Horse Blood.
NB: Although coliforms are inhibited by this medium, Pseudomonas aeruginosa and some fungi will grow.
