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Gram reaction? Oxidase? Morphology? Yes No Rods Cocci Urea hydrolyzed? Citrate utilized? Yes Erysipelothrix Staphylococcus rh

The cultures of a set of patients grow gram-negative, oxidase-positive, urease positive and H2S- positive bacteria. Using the key bellow, what is the causative agent of these infections?

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Gram negative oxidase positive urease positive H2S positive bacteria points towards Bordetella bronchiseptica. It is a gram negative rod shaped bacteria. It rarely infects humans but can cause respiratory infection in dogs.

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