WorksheetsVibrio
Total questions: 10
Worksheet time: 5mins
A 63-year-old man visited his favorite oyster restaurant in a small town on the eastern shore of the Gulf Coast of Texas. He ate two dozen oysters. Two days later, he was admitted to the hospital because of an abrupt onset of chills, fever, and light- headedness when he stood up. (In the emergency department [ED], his blood pressure was 60/40 mm Hg.) While in the ED, he developed erythematous skin lesions. These rapidly evolved into hemorrhagic bullae, which then formed ulcers. The man drank a six-pack of beer and one half-bottle of whisky each day. A microorganism of major concern for this patient is
Vibrio vulnificus
Escherichia coli
Salmonella typhi
Clostridium perfringens
Streptococcus pyogenes (group A streptococci)
A patient presents to the emergency department with nonbloody diarrhea for 12 hours. The patient lives in Washington, DC, and has not recently traveled out of the area. Which one of the fol- lowing is unlikely to be the cause of your patient’s diarrhea?
Salmonella typhimurium
Campylobacter jejuni
Shigella sonnei
Vibrio cholerae
Escherichia coli
An 18-year-old woman in rural Bangladesh develops profuse (8 L/d) diarrhea. She has no symptoms other than the diarrhea and the manifestations of the fluid and electrolyte loss caused by the diarrhea. The most likely cause of her diarrhea is
Campylobacter jejuni
Enterotoxigenic Escherichia coli
Salmonella typhimurium
Vibrio cholerae
Shigella dysenteriae
10. The Vibrio cholerae factor responsible for diarrhea is a toxin that
BlocksEF-2
Yields increased intracellular levels of cAMP
Cleaves SNARE
Blocks EF-1-dependent binding of amino-acyl-tRNA to
ribosomes
Cleaves VAMP
In September 1854, a severe epidemic of cholera occurred in the Soho/Golden Square area of London. Dr. John Snow, a father of epidemiology, studied the epidemic and helped stop it by which of the following actions?
Banning the sale of apples at the local markets
Removing the handle of the Broad Street water pump
Stopping the sale of shellfish imported from Normandy
Pasteurizing milk
Promoted washing vegetables that were consumed raw
Selective media for Vibrio cholerae are the following EXCEPT
Gelatin taurocholate trypticase tellurine agar
thiosulphate citrate bile salt sucrose agar
bile salt agar
deoxycholatecitrate agar
Which of the following stetements is true about Vibrio Cholerae?
growth better in an alkaline ph
nutritionally fastidious
best growth at 24 C
rod - shaped bacilli
The following are the virulence factors of Vibrio Cholerae EXCEPT
zonula occludens toxin
verocytotoxin
accessory cholera enterotoxin
cholera enterotoxin
All of the following are helophilic vibrios EXCEPT
V.vulnificus
V.cholerae
V.parahemolyticus
V.alginolyticus
Among the following, which is the most common bacteria associated with ear infection?
V.alginolyticus
V.parahemolyticus
V.mimicus
V.cholerae
