EPIDEMIOLOGY CHAPTER 1 EXAM
QUESTIONS WITH COMPLETE
SOLUTIONS
vector-borne transmission - ANSWER-indirect transmission of an infectious agent that
occurs when a vector bites or touches a person. type of indirect transmission
vehicle borne transmission - ANSWER-indirect transmission of an infectious agent that
occurs when a vehicle (or fomite) touches a person's body or is ingested. type of
indirect transmission
mixed epidemic - ANSWER-a mix of common-source and propagated epidemics
case - ANSWER-any individual identified as having a particular disease, disorder, or
condition
primary case - ANSWER-first disease case
index case - ANSWER-the first disease case brought to the attention of the
epidemiologist
secondary cases - ANSWER-those persons who become infected and ill after a disease
has been introduced into a population and who become infected from contact with the
primary case
suspect case - ANSWER-has all of the signs and symptoms of the disease or condition,
yet has not been diagnosed yet
pathogen - ANSWER-any virus, bacteria, fungus or parasite carrying a disease
confirmed case - ANSWER-when all criteria is met for the case definition
case severity - ANSWER-how severe is the disease or condition? does it require
hospital stay? If so, how long? How debilitating is the illness? What are the chances of
recovery...etc.
The Epidemiology Triangle - ANSWER-1. The role of the host
2. The agent or disease-causing organism -viruses, bacteria, fungi, parasites, and mold
3. The environmental circumstances needed for a disease to survive
4. time-related issues (life expectancy of the host or pathogen, duration of the course of
illness, and so on.)
QUESTIONS WITH COMPLETE
SOLUTIONS
vector-borne transmission - ANSWER-indirect transmission of an infectious agent that
occurs when a vector bites or touches a person. type of indirect transmission
vehicle borne transmission - ANSWER-indirect transmission of an infectious agent that
occurs when a vehicle (or fomite) touches a person's body or is ingested. type of
indirect transmission
mixed epidemic - ANSWER-a mix of common-source and propagated epidemics
case - ANSWER-any individual identified as having a particular disease, disorder, or
condition
primary case - ANSWER-first disease case
index case - ANSWER-the first disease case brought to the attention of the
epidemiologist
secondary cases - ANSWER-those persons who become infected and ill after a disease
has been introduced into a population and who become infected from contact with the
primary case
suspect case - ANSWER-has all of the signs and symptoms of the disease or condition,
yet has not been diagnosed yet
pathogen - ANSWER-any virus, bacteria, fungus or parasite carrying a disease
confirmed case - ANSWER-when all criteria is met for the case definition
case severity - ANSWER-how severe is the disease or condition? does it require
hospital stay? If so, how long? How debilitating is the illness? What are the chances of
recovery...etc.
The Epidemiology Triangle - ANSWER-1. The role of the host
2. The agent or disease-causing organism -viruses, bacteria, fungi, parasites, and mold
3. The environmental circumstances needed for a disease to survive
4. time-related issues (life expectancy of the host or pathogen, duration of the course of
illness, and so on.)
