Exam 16: Aerobic Gram-Positive Bacilli

All of the following species of Arcanobacterium are clinically significant EXCEPT:

Infections caused by Tsukamurella paurometabola include all the following EXCEPT:

What organism displays Babès-Ernst granules on a Gram stain?

What are the confirmatory tests performed at a state laboratory for Bacillus anthracis?

All the following tests should be performed by sentinel laboratories to rule out the possibility of Bacillus anthracis from an isolate EXCEPT:

What are the names of the species of organism that are primarily saprophytic organisms and resemble other aerobic actinomycetes with the morphology and diseases they cause?

Why is it extremely important to diagnose infections with Nocardia spp.?

What is the name of the iron-chelating compound produced by Nocardia spp.?

What Bacillus sp.is a relatively common cause of food poisoning and opportunistic infection in susceptible hosts?

What Corynebacterium infects mostly immunocompromised patients?

What disease is considered a complication of any form of anthrax (cutaneous,gastrointestinal,or inhalation)?

Erysipelothrix rhusiopathiae produces all the following diseases EXCEPT:

Several people from a picnic came down with a gastrointestinal disturbance,and public health officials suspected a case of food poisoning.The food,especially hot dogs,were cultured and after 24 hours of growth on sheep blood agar (SBA),there was a small,round,smooth,translucent colony surrounded by a narrow zone of b-hemolysis.A Gram stain showed gram-positive coccobacilli.Motility medium was inoculated and an umbrella pattern of motility was observed at room temperature.What organism was isolated as the cause of the illness?

How can Nocardia spp.be presumptively identified?

A young girl is brought to her physician by her mother,who says the child has been very sluggish with a fever of 38° C (100.5° F)for a week.The mother noticed that the child's tonsils were red and that yesterday the back of her throat turned a gray color and looked to have a gray membrane on it.What disease should the physician suspect?

What test is performed to determine if Corynebacterium diphtheriae is a toxigenic strain of the organism?

What is the major virulence factor associated with Corynebacterium diphtheriae?

What bacterium produces colonies that are nonhemolytic,large,gray,and flat with an irregular margin on sheep blood agar (SBA)?

What is one of the most frequently isolated,clinical significant corynebacteria?

What is the name of the Nocardia sp.that causes a chronic confluent bronchopneumonia?