|
Subtopic 3 Summary The group D streptococci are associated with urinary tract infections, endocarditis, and septicemia. The group D streptococci are bile-esculin positive but are not salt tolerant. Streptococcus bovis is a member of the group D streptococci. What two tests are incorporated into the bile esculin test?
An ambulatory patient with a temperature of 101°F and painful urination visits her physician. He orders a urine culture. The specimen is plated on blood agar and MacConkey agar. At 24 hours' incubation, flat, gray, non-hemolytic colonies are observed on the blood agar plate. No growth on MacConkey. Bile-esculin was positive for growth with black precipitate. What other tests should be performed? What organisms are suspected? |