You are now at the end of your exam.  At this point in time, you should erase your white board and then show the front and back of the white board to the camera to confirm that your board is blank.  Please mark true once you erase your board and show the front and back to the camera.  If you did not use a white board, you can mark false. 

A gram-negative rod was isolated from the blood of a patient who spent time in Southeast Asia during the Vietnam war. His clinical condition started with a pulmonary infection that progressed to bacteremia and subsequent septicemia. The organism produced the following morphology on SBA and test results: P. pseudomallei 2.png TSI: alkaline/alkaline Motility: positive Oxidase: positive Oxidative/Fermentation Glucose: oxidative utilization only The MOST probable genus of this isolate is:

This organism was isolated from a urine specimen from a 25 year-old hospitalized diabetic patient.  The pure culture shown is growing on MAC agar.  Based on the picture, which of the following is the likely organism? MacLF(2).jpg  

According to the picture shown here or a special stain from a sputum specimen,  what would be an appropriate genus of an organism that would have this type of staining characteristic? final stain pic.png

An organism is isolated from the endotracheal tube of a patient receiving chemotherapy The gram negative bacillus grows  on BAP and MacConkey – the MAC plate is shown here. The isolate is motile, oxidase positive, and biochemically an oxidizer. Which of the following is the likely etiologic agent? Exam 1 Image 5.jpg

The colonies shown in the image below grew from the CSF taken from a 75 year old male patient who experienced nausea/vomiting, fever, severe headache and stiffness of his neck. Direct smear of the CSF is also shown below. The patient was diagnosed with bacterial meningitis. Based on the information given, which of the following would you suspect as the causative agent? Alpha mucoid(1).jpgCLSC CSF 3(1).jpg

 In the Kirby Bauer disk diffusion test, if the density of the inoculum used to seed a plate for an antibiotic susceptibility test is less than the standard, the zone diameter will show which of the following after proper incubation?

The image below shows a direct Gram stained smear of a sputum sample submitted for culture from a 75 year old man who has history of alcoholism. Based on your observation, your interpretation of the direct sputum smear would be Sputum with epi cells(1).jpg

All of the following organisms can be transmitted through contact with an infected animal source.  Which of the following organisms is transmitted from contact with wild rabbits?

An 87-year old patient had a foot wound that grew gram-negative rods on McConkey agar as pink to dark pink oxidase-negative colonies along with the following results: TSI: A/A Indole: neg MR: neg VP: pos Citrate: pos H2S: neg Urea: pos. Motility: neg Ornithine: neg Antibiotic susceptibility: Carboxicillin and ampicillin resistant, all others sensitive. What is the MOST likely organism?