A 59-year-old female, with fever of unknown origin, has three sets of blood culture bottles drawn within a 24-hour period. At 24 hours incubation, one anaerobic blood
Culture bottle reveals the organism seen in the Gram stained image provided.
Source: CDC and Bobby Strong
The small, white, anaerobic colony that grows proves to be catalase, indole-positive, and resistant to SPS. This organism can be
1) presumptively identified as Propionibacterium acnes.
2) presumptively identified as Peptostreptococcus anaerobius.
3) considered a probable contaminant in this case.
4) considered clinically significant in this case

Question

A 59-year-old female, with fever of unknown origin, has three sets of blood culture bottles drawn within a 24-hour period. At 24 hours incubation, one anaerobic blood
Culture bottle reveals the organism seen in the Gram stained image provided.
 Source: CDC and Bobby Strong
The small, white, anaerobic colony that grows proves to be catalase, indole-positive, and resistant to SPS. This organism can be
1) presumptively identified as Propionibacterium acnes.
2) presumptively identified as Peptostreptococcus anaerobius.
3) considered a probable contaminant in this case.
4) considered clinically significant in this case

Quizplus · Accepted Answer

The Answer of A 59-year-old female, with fever of unknown origin, has three sets of blood culture bottles drawn within a 24-hour period. At 24 hours incubation, one anaerobic blood
Culture bottle reveals the organism seen in the Gram stained image provided.
 Source: CDC and Bobby Strong
The small, white, anaerobic colony that grows proves to be catalase, indole-positive, and resistant to SPS. This organism can be
1) presumptively identified as Propionibacterium acnes.
2) presumptively identified as Peptostreptococcus anaerobius.
3) considered a probable contaminant in this case.
4) considered clinically significant in this case

A 59-Year-Old Female, with Fever of Unknown Origin, Has Three