chapter 19: enterobacteriaceae

Question 1

often part of the usual intestinal microbiota of both humans and animals;outside their normal body sites, these organisms can produce serious extraintestinal, opportunistic infection

Answer 1

opportunistic pathogens

Question 2

primary pathogens or “true pathogens” include

Answer 2

s. enterica, shigella spp. and yersinia spp.

Question 3

initially considered a harmless member of the colon resident biota

Answer 3

e.coli

Question 4

e.coli morphology in MAC

Answer 4

lactose-pos (pink) colony with a surrounding area of precipatetd bile salts

Question 5

on EMB

Answer 5

green metallic sheen

Question 6

causes the traveler’s diarrhea

Answer 6

enterotoxigenic e.coli