Who Am I?
I am partial acid-fast, have extensive aerial hyphae, and am lysozyme resistant
Nocardia sp.
How are the colonies of B. anthracis described?
Medusa head
I am a Gram-positive cocci, beta hemolytic on SBA, catalase negative, PYR positive, bacitracin sensitive?
Strep. Pyogenes
What is the name of the bacteria that plays an important role in the health of the female vaginal tract, protecting it against pathogens?
Lactobacillus
Gram-positive diplococci, lancet/bullet shaped, wide zone of alpha hemolysis, donut appearance on agar, optochin sensitive, bile soluble
What occupations are at a greater risk for Erthsipeloid lesions
Animal handlers, especially hogs
I am the only organism to produce spores in aerobic conditions. I am nonhemolytic on SBA, I am nonmotile, and I do not grow on PEA
Bacillus anthracis
Name two staph aureus infections
Toxic shock syndrome, bacteremia, food poisoning
What test is performed to determine if Corynebacterium diphtheriae is a toxigenic strain of an organism?
Elek’s test
A staphylococcus produced a fibrin clot in a tube coagulase test but not on the slide coagulase test. Which organism is it and why?
Staph aureus, has free coagulase only
Which subspecies of C. diphtheriae has the highest mortality rate?
Gravis
Primarily an agent of UTIs. I have an adherence factor and I am coagulase negative. I am non-hemolytic on SBA and resistant to Novobiocin. I am common in sexually active young women
Staph saprophyticus
Gram stain examination from a blood culture bottle shows dark blue spherical organisms in clusters. Growth on SBA shows small, round, pale, yellow colonies. Further testing that could be performed include?
Catalase and coagulase
On potassium tellurite medium, Corynebacterium diphtheriae produces what color colonies?
Grey to black
Gamma hemolytic, catalase negative, blackens bile esculin agar, no growth in 6.5% NaCl broth
Group D strep
Pulmonary anthrax is also known as?
Woolsorters disease
White creamy raised growth on SBA, susceptible to novobiocin, coagulase negative, and I am a common infection of indwelling medical equipment
Staph epidermidis
Which media is used for the detection of hemolysis pattern?
Which type of medium aids in the presumptive identification of organisms based on their appearance on the media?
I exhibit characteristics end over end tumbling motility when incubated at room temperature for 1-2 hours
Listeria Monocytogenes
A large, aerobic, beta-hemolytic, gram positive rod is isolated from an eye culture. Further testing reveals it is motile and produces a wide zone of egg yolk agar. Who am I?
B. cereus
Who am I? I am catalase negative, gram positive, nonspore forming bacillus, and I produce H2S on a TSI slant
Erythsipelothrix rhusiopathiae
Which media is nonselective and nondifferential?
Chocolate agar
What organism displays Babes-Ernst granules on a gram stain?
Corynebacterium diphtheriae