Clostridium, B cereus, staph

Question 1

Cause of psuedomembranous colitis

Answer 1

C dif from over use of Abx
opportunist
(especially clindamycin)

Question 2

Gram (+) spore former

Answer 2

C dif

Question 3

C dif toxins

Answer 3

toxin A: enterotoxin, fluid secretion, inflammation

toxin b: cytotoxin

Question 4

EIA diagnoses

Answer 4

Detects C dif toxin

Question 5

What happens after 72hrs in hospital?

Answer 5

normal flora replaced by more virulent bacteria
(like C dif)

Question 6

Disease with common relapse, requires long term Abx

Answer 6

C dif

Question 7

fecal transplants

Answer 7

C dif

Question 8

C pergringens

Answer 8

1 million cases of food poisoning each year

no fever, no vomiting, recovery in a day

Question 9

Clostridium virulence

Answer 9

enterotoxin

synthed during sporulation

mucosa of ilium, inhibits glucose uptake causes electrolyte/water secretion

Question 10

Clostridium reservoir and transmission

Answer 10

Meat, poultry, not cooked properly

high dose required

Question 11

Gram (+) spore former

RICE

Answer 11

B Cereus

Question 12

What causes the two disease states in B cereus

Answer 12

1. vomiting: if spores already formed

2. diarrheal form: if spores form once consumed

Question 13

Cause of rapid onset of disease with B cereus

Answer 13

Heat stabile enterotoxin

(step 1, vomiting)

Question 14

Second most common cause of foodborne illnes

Answer 14

Staph aureus

Question 15

Signs of Gi staph infection

Answer 15

hyper salivation to prepare for vomiting

Question 16

Why can’t staph be cultured from feces?

Answer 16

terminated in stomach

Question 17

Disease w/out colonization

Answer 17

staph, check food handlers

microwave will kill staph but not toxin

Question 18

Staph prevention?

Answer 18

Eat fast before it can grow