Semiselective medium for isolation of Moraxella bovis from cattle with infectious keratoconjunctivitis

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Abstract
The incorporation of 2.5 micrograms/ml of cloxacillin into 5% bovine blood agar provided an inexpensive, easily prepared culture medium for the primary isolation of Moraxella bovis from bovine lacrimal and nasal secretions. With this medium, the time required to identify and isolate M. bovis from large numbers of field specimens was substantially reduced, whereas the sensitivity of isolation was increased by 60%.