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Introduction To Epidemiology Question Paper

Introduction To Epidemiology

Course:Bachelor Of Science In Environmental Health

Institution: Kenyatta University question papers

Exam Year:2009

KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR
OF SCIENCE (ENVIRONMENTAL HEALTH)

HEH 200:
INTRODUCTION TO EPIDEMIOLOGY

DATE: MONDAY 30TH MARCH 2009 TIME: 8.00 A.M. – 10.00 A.M.

INSTRUCTIONS:

• Answer all Questions in this section.
• Answer Question One and any other Two questions in Section B

SECTION A
(20 MARKS)

1.
Define the following terminologies as used in the concept of epidemiology.

a)
Distribution

(2 marks)
b)
Determinants

(2
marks)

2.
Explain the relationship between incidence and prevalence while highlighting the
importance
of
each.
(4
marks)

3.
Describe briefly the Key concepts in the chain of infection as used in
epidemiology.
(4
marks)

Page 1 of 2

4.
Distinguish between the following as used in epidemiology by use of relevant
examples.
a)
Case fatality rate and proportionate mortality rate. (2 marks)
b)
Sensitivity
and
specificity.
(2
marks)

5.
Define herd immunity and explain conditions necessary for herd immunity to
occur
in
a
population.
(4
marks)

SECTION B
1.
a)
Describe the classification of Agent, Host and environmental factors that
determine the occurrence of diseases in Human populations.

(15 marks)
b)
Explain the public health importance of false positive and false negative.
(5 marks)

2.
You are an epidemiologist in Kakuma Refugee Camp and there is a suspected
outbreak of cholera. Describe the procedure you would use to investigate the
outbreak of the disease and recommend feasible interventions. (15 marks)

3.
a)
identify various sources of morbidity and mortality statistics.(8 marks)
b)
Explain the various sources of error in interview surveys. (7 marks)

4.
Discuss the various approaches of expressing prognosis of a disease.

(15 marks)
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Introduction To Epidemiology Question Paper

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