Evaluate urine culture results performed on a clean catch, midstream urine: Cfu = Colony forming units TSA w/ sheep’s blood:   >105 cfu, beta hemolytic          Oxidase =   Negative MacConkey:   >105 cfu, Lactose fermenter             Spot indole:  Positive This organism is: 

A member of Enterobacteriaceae is swarming on SBA.  Select the test which if positive will confirm the Genus of this organism and rule out other members of the family:

Which organism would appear this way on a modified acid fast stain?

A respiratory culture is growing a gram negative rod with the following test results: TSI: K/A, negative H2S        Oxidase: negative        Spot indole: negative         PAD: negative Citrate: positive        Urease:  positive       MR/VP: MR neg/VP pos What could this organism be?

Evaluate serological testing performed on a person suspected of having Lyme disease: ELISA Test for Lyme Antibodies:  Positive Based on these results, what should be done?

Select the option which is not a characteristic of Bacillus anthrasis:

Which is not a characteristic of Enterobacteriacea?

Carriers of Salmonella typhi and paratyphi can spread the organism to others while not being sick themselves due to the organism residing in this organ: 

Group B Streptococcus and Listeria can be mistakenly confused when growing on SBA.  Select the test which would definitively help to separate these two organisms.

Evaluate the picture of a non-fermenter with a grapey odor.  Which organism is it?