Download University of Jaffna MBBS 2020 December Microbiology Paper II Question Paper

Download University of Jaffna (University of Sri Lanka) MBBS (Bachelor of Medicine and Bachelor of Surgery) 2020 December Microbiology Paper II Previous Question Paper

z ivecr ,
UNIVERSITY OF JAFFNA, SRI LANKA
SECOND EXAMINATION FOR MEDICAL DEGREES (2nd) December
F
V1
M
Microbiology Paper II
Date: 14.12.2020
Time allowed: 2 hours
Answer all four questions. Please write answers to Question 1 and 2 in one answer book and
use separate answer book for Questions 3 and 4.
1)
A 28 year old man was admitted to the Teaching hospital Jaffna with high fever,
-
-
nausea, headache, malaise and retroorbital pain for three days. His WBC and platelet
count on the day of admission were 3,800/mm3 and 110,000/mm 3 respectively.
However, both counts were found to be decreasing since admission. A diagnosis of
dengue was confirmed by dengue specific tests.
1.1 Describe the source and mode of transmission of dengue virus.
(15 marks)
1.2 Describe the pathogenesis of dengue viral infection.
(30 marks)
1.3 State the different phases of dengue viral infection and discuss the
specific virological tests available to diagnose dengue infection in
(35 marks)
each of the phases you have mentioned.
1.4 Discuss the challenges in prevention and control of dengue viral
infection.
(20 marks)
2)
A previously healthy 48-year-old farmer presented to the base hospital, Anuradhapura
with fever, headache and severe rnyalgia for seven days and yellowish skin
discoloration. On examination, he had bilateral conjunctival suffusion and
hepatomegaly. His blood samples were sent to MRI for a specific microscopic
agglutination test (MAT).
2.1
State the most likely diagnosis and name the aetiological agent
(10 marks)
responsible for the above condition.
2.2 Describe the source and modes of transmission of this infection.
(15 marks)
2.3 Describe the pathogenesis of this infection.
(25 marks)
2.3 Discuss the microbiological tests used for the aetiological
(30 marks)
diagnosis of this infection.
2.4 Discuss the preventive measures for this infection.
(20 marks)

---

3) A nine-year-old boy was admitted with blood stained diarrhoea of five days duration.
3.1 Name five (5) possible causative organisms for this condition.
(15 marks)
3.2 Describe briefly the pathogenesis of blood-stained diarrhoea.
(20 marks)
3.3 Describe briefly collection, storage and transport of stool specimen
for culture from this patient.
(20 marks)
3.4 Discuss the use of antibiotics for the treatment of diarrhoea in this
child.
(45 marks)
A 54-year-old diabetic woman complained of vaginal discharge, irritation and soreness.
On examination, there was a white, curd like lesion in the vagina and signs of
inflammation.
4.1 Name the most possible causative organism for this infection.
(10 marks)
4.2 Name the other infections caused by the organism mentioned in
(15 marks)
4.1.
4.3 Describe the risk factors for the infections caused by this
(45 marks)
organism.
4.4 Discuss the antimicrobial treatment of this infection in this patient.
(30 marks)

---