Author Question: Thayer-Martin is a selective medium designed to isolate A) Neisseria gonorrhoeae from normal ... (Read 73 times)

HCHenry · **on:** Jun 25, 2018

Thayer-Martin is a selective medium designed to isolate

A) Neisseria gonorrhoeae from normal vaginal flora.
B) Neisseria meningitidis from normal upper respiratory flora.
C) both A and B.
D) neither A nor B.

Question 2

The catheterized urine from a pregnant 28-year-old female at 26 weeks gestation grows 110 colonies of beta-hemolytic, gray colonies that prove to be catalase negative, PYR negative, and hippurate hydrolysis positive.

There is no growth on the MacConkey agar. A 0.001 mL calibrated loop was used to inoculate both agars. This organism should be reported as
A) >100,000 CFU/mL of Streptococcus agalactiae. B) >10,000 CFU/mL of Streptococcus pyogenes.
C) >100,00 CFU/mL of Streptococcus pyogenes. D) >1000 CFU/mL of Streptococcus agalactiae.