A man, after skinning a dead animal, developed a pustule on his hand. A smear prepared from the lesion showed the presence of Gram positive bacilli in long
Toxins are implicated as the major pathogenetic mechanism in all of the following bacterial diarrhoeas except? A. Vibrio cholerae B. Shigella sp. C. Vibrio parahaemolyticus D. Staphylococcus aureus
A microbiologist wants to develop a vaccine for prevention of attachment of diarrhoeagenic E. coli to the specific receptors in the gastro-intestinal tract. All of the following fimbrial
A 23-year-old man who is a graduate student comes to the physician because of a 3-month history of anxiety. He says that he has difficulty completing experiments in
A 37-year-old man with pancreatic cancer is brought to the emergency department because of fever and muscle aches for 4 days. His temperature is 39.7°C (103.5°F), and blood
Which of the following toxins acts by inhibiting protein synthesis A. Cholera toxin B. Shiga toxin C. Pertussis toxin D. LT of enterotoxigenic E.coli Correct answer : B.
A 20 year old man presented with hemorrhagic colitis. The stool sample grew Escherichia coli in pure culture. The following serotype of E.coli is likely to be the
Which of the following statements is true about hapten? A. It induces brisk immune response B. It needs carrier to induce immune response C. It is a T-independent
An 18-year-old woman has gastroenteritis with nausea and vomiting and is able to ingest only small amounts of water. After 3 days, she develops light-headedness, especially when sitting
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