A 46 year old dog warden was admitted to the hospital with several puncture bite wounds encountered while wrangling with a stray dog. Culture at 48 hours produced small yellow colonies on 5% BAP and chocolate agars in 10% CO2, but no growth on MAC. Gram stain showed gram negative, curved fusiform rods. Colonies were oxidase and catalase positive. What is the most likely identification?
Read DetailsAn emergency department physician suspected Corynebacterium dipthteriae when examining the sore throat of an exchange student from S. America. What is the appropriate media for the culture of the nasopharyngeal swab obtained from the patient?
Read DetailsA listless 12 month old boy with a fever of 103F was taken to the ER. He had been diagnosed with an ear infection 3 days earlier. A spinal tap was performed, but only one tube of CSF was collected from the lumbar puncture. The single tube should be submitted to which department first?
Read DetailsA catalase-positive, gram-positive short rod, was recovered from the blood of a prenatal patient. The organism appeared on a 5% sheep blood as white colonies surrounded by a small zone of beta hemolysis. The following tests were performed, indicating the patient was infected with which organism? Motility= positive (tumbling on wet prep) room temperature; Motility = positive (umbrella shaped on semisolid agar) room temperature; Glucose= positive (fermentation); Esculin = positive; VP – positive.
Read DetailsIf a pinpoint colony on blood agar after 24 hours of incubation is isolated, and if the colony is oxidase-, urease-, and indole-negative, and also exhibits bipolar staining on Gram stain, then the suspect bioterror agent is most likely:
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