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Iph2212:Medical Entomology Question Paper
Iph2212:Medical Entomology
Course:Bachelor Of Science In Public Health
Institution: Meru University Of Science And Technology question papers
Exam Year:2014
INSTRUCTIONS: Answer question one and any other two questions
QUESTION ONE – (30 MARKS)
(a) A 24-year old female automotive technician presents herself at the doctor’s office. She
complains of fever and of pain in her left hand. On physical examination, the patient had
a deep wound on her left palm that was oozing pus. She had purplish red colouration up
her left arm. She had enlarged lymph nodes at the elbow and under her arm. In her
history, the patient had punctured her left palm with sharp metal about a week earlier.
She said the wound had bled for a few minutes and she thought that she had thoroughly
washed it with soap and water. She had covered the wound with a large bandage and
gone back to work. She developed a fever about three days later. She had also been
vomiting and had diarrhea for the past couple of days
(i) What type of infection do you believe she has in this hand? (1 Mark)
(A) Streptococcus pyogenes
(B) Staphylococcus aureus
(C) Clostridium
(D) Pseudomonas
(E) Pasteurella multocida
2
(ii) From complaint and physical examination, which of the symptoms lead to your
choice of agent? (1 Mark)
(A) The fever and pain in the hand
(B) Fever, wound with oozing pus and enlarged lymph nodes
(C) The lymph nodes and red colouration
(D) The warm dry skin
(E) The pain, red colouration and enlarged lymph nodes.
(iii) Which of the following is most likely to follow this infection? (1 Marks)
(A) Gangrene and amputation
(B) Toxic shock syndrome
(C) Muscle spasms
(D) Neurological dysfunction of the hand
(E) Arthritis
(b) In the course of 1 week, a 6 year old boy develops 0.5 to 1.0cm pustules on his face.
During the next two days, some of the pustules break, forming shallow erosions covered
by a brown crust. New lesions form around the crust. The boy’s 40 year old uncle
develops similar lesions after visiting for 1 week during child’s illness.
(i) What is the most likely diagnosis? (1 Mark)
(ii) What is the most likely micro-organism that would be identified by a gram stain
from skin pustule? (1 Mark)
(c) A 45 year old male became ill approximately 2 to 3 weeks ago following an alcoholic
spree. He had nausea, vomiting dehydration, confusion and high fever. He died shortly
after admission. What is the most likely diagnosis and the likely causative agent?
(2 Marks)
(d) A 33 year old female dairy farmer develops a severe headache and neck stiffness. On
physical examination, her temperature is 38.2°?? and she has no Papilledema. A lumbar
puncture is performed and the gram stain of the C.S.F shows many gram positive rods.
What is the most likely causative agent in this case? (1 Mark)
(e) With the aid of a well labelled diagram, describe the general structure of bacteria.
(5 Marks)
(f) Enumerate four micro-oranisms that are associated with pelvic inflammatory disease.
(4 Marks)
(g) Outline the pathology of gas gangrene. (3 Marks)
(h) Describe bacterial flagella and various types of flagella. (5 Marks)
(i) A 35 year old man with HIV complain that he has had “bad” taste in his mouth and
discolouration of his tongue for the past 6 weeks. What is the most likely diagnosis?
(2 Marks)
(j) Describe the bacterial endospores. (3 Marks)
3
QUESTION TWO – (20 MARKS)
Give a detailed discussion of the bacterial grow curve. (20 Marks)
QUESTION THREE – (20 MARKS)
(a) Discuss the pathology and chemotherapy of pulmonary tuberculosis. (14 Marks)
(b) Outline the morphological classification of fungi. (6 Marks)
QUESTION FOUR – (20 MARKS)
Write an essay on sterilization. (20 Marks)
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