W1-2-60-1-6
JOMO KENYATTA UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
University Examinations 2020/2021
YEAR III SEMESTER II EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN MICROBIOLOGY (MAJOR)

SBT 2479:  MEDICAL VIROLOGY II

DATE:   JANUARY, 2021					        		    TIME:  2 HOURS

INSTRUCTIONS:  	 Answer Question ONE and Any Other TWO Questions.

Question One (30 Marks)

a)	Describe the morphology of poxviruses.	[3 marks]

b)	Describe briefly the epidemiology of hepatitis A virus.	[3 marks]

c)	Explain the four families of arboviruses that infect man.	[3 marks]

d)	Differentiate the two forms of yellow fever infection in man.	[3 marks]

e)	Explain the difference between furious and paralytic rabies.		[3 marks]

f)	Explain how you would attempt to control an outbreak of hepatitis A in a community.	
	[3 marks]

g)	Explain the immune response to the three serotypes of poliovirus.	[3 marks]

h)	Explain the illnesses caused by arboviruses.	[3 marks]

i)	Explain how you would control rabies in wild animals.	[3 marks]

j)	Explain hepatocellular carninoma caused by hepatitis virus.		[3 marks]
	
Question Two – 20 Marks

a)	Explain attenuated versus inactivated polio vaccines.	[10 marks]

b)	Discuss transmission and control of yellow fever virus in a community.	[10 marks]
Question Three – 20 Marks

Discuss the three carriers of chronic of hepatitis B virus infection in man.

Question Four – 20 Marks

Describe the discovery of human retroviruses.