All India Institute of Medical Sciences 2003 - Question Paper

1. It is a zoonotic infection.
2. Human disease is characterized by an interstitial pneumonia
3. No rash is seen
4. Weil Felix reaction is very useful for diagnosis.
Ans 4

28. The subsequent statements are actual regarding botulism other than.

1. Infant botulism is caused by ingestion of preformed toxin.
2. Clostridium botulinum A, B, C and F reason human disease.
3. The gene for botulinum toxin is encoded by a bacteriophage.
4. Clostridium boriatti may reason botulism.
Ans 1

29. Streptococcal Toxic shock syndrome is due to the subsequent virulence factor.

1. M protein
2. Pyrogenic exotoxin
3. Streptolysin O.
4. Carbohydrate cell wall.
Ans two M protein resists phagocytosis. Pyrogenic toxin causes TSS.

30. A 24 year old male presents to a STD clinic with a single painless ulcer on external genitalia. The option of laboratory test to look for the etiological agent would be:

1. Scrappings from ulcer for culture on chocolate agar with antibiotic supplement.
2. Serology for detection of specific IgM antibodies.
3. Scrappings from ulcer for dark field microscopy.
4. Scrappings from ulcer for tissue culture.
Ans three (presumably to look for Treponema pallidium.)

31. There has been an outbreak of food borne salmonella gastroenteritis in the community and the stool samples have been received in the laboratory. Which is the enrichment medium of choice:

1. Cary Blair medium
2. V R medium
3. Selenite "F" medium
4. Thioglycollate medium.
Ans 3

32. A 20 year old male had pain abdomen and mild fever followed by gastroenteritis. The stool exam showed presence of pus cells and RBCs on microscopy. The etiological agent responsible is most likely to be:

1. Enteroinvasive E. coli.
2. Enterotoxigenic E. coli.
3. Enteropathiogenic E. coli.
4. Enetroaggregative E. coli.
Ans 1

33. A man presents with fever and chills two weeks after a louse bite. There was a maculo-popular rash on the trunk which spread peripherally. The casue of this infection can be:
1. Scurb typhus.
2. Endemic typhus.
3. Rickettsial pox.
4. Epidemic typhus.

Earning:   Approval pending.