QUESTION #2. Which organism would most likely be isolated from the vagina of a normal 5 yr old girl?
a. Doderlein’s bacilli
b. E. coli
d. No organisms will be isolated
ANSWER : c - staphylococcus;
Doderlein's bacillus is a rod shaped Gram positive bacillus which grows anaerobically on acid media. It appears in the vagina 3-4 days after birth and disappersa after 10-14 days. It appears again at puberty and disappears after menopause. It probably comes from the intestine. Its presence is dependent to estrogen. .......Text book of gynecology, Dutta