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NSG-401 FINAL EXAM QUESTIONS WITH 100%
SOLVED ANSWERS!!
Infectious disease - .....ANSWER ...✔✔ Presence and
replication of an infectious agent in the tissues of the
host with manifestations of signs and symptoms
Epidemiological Triad - .....ANSWER ...✔✔ Three
components of infectious disease: agent, host, and
environment
Chain of infection - .....ANSWER ...✔✔ Sequence of
events that allows an infectious disease to spread
Agent - .....ANSWER ...✔✔ Virus, bacteria, fungi,
protozoa, worm that causes an infectious disease
Host - .....ANSWER ...✔✔ Person or animal infected
by the agent in an infectious disease
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Environment - .....ANSWER ...✔✔ How the disease
spreads through water, food, air, etc in an infectious
disease
Staph - .....ANSWER ...✔✔ Bacterial agent in the
chain of infection in an infectious disease
Communicable disease - .....ANSWER ...✔✔
Contagious disease with portal of entry, means of
transmission, and portal of exit
Portal of entry - .....ANSWER ...✔✔ The route through
which an infectious agent enters a susceptible host
Means of transmission - .....ANSWER ...✔✔ The way
an infectious agent is spread from one person to another
Portal of exit - .....ANSWER ...✔✔ The route through
which an infectious agent leaves an infected person
Infection - .....ANSWER ...✔✔ Presence and
replication of an infectious agent in the tissues of the
host with manifestations of signs and symptoms
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Endemic - .....ANSWER ...✔✔ Constant presence of a
disease in a geographic population
Epidemic - .....ANSWER ...✔✔ Spread of a specific
outbreak of a disease
Pandemic - .....ANSWER ...✔✔ Global outbreak of a
disease
Outbreak - .....ANSWER ...✔✔ Localized increase in
the incidence of a disease
Host factors - .....ANSWER ...✔✔ Physical and
emotional health, sex, immune status, age that determine
the risk for infection
Upper respiratory infection - .....ANSWER ...✔✔
Infection of the nose, throat, and sinuses
Mechanism of transmission - .....ANSWER ...✔✔ The
way a disease is spread from one person to another
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Airborne - .....ANSWER ...✔✔ Transmission of disease
through the air
Foodborne illnesses - .....ANSWER ...✔✔ Illnesses
caused by consuming contaminated food
Campylobacter - .....ANSWER ...✔✔ Bacterial agent
linked to chicken that causes diarrhea
Salmonella - .....ANSWER ...✔✔ Bacterial agent that
can be found in different foods and causes food
poisoning
E. Coli - .....ANSWER ...✔✔ Bacterial agent that can
be found in different foods and causes food poisoning
Disease emergence - .....ANSWER ...✔✔ Increase in
the occurrence of a disease in a population
Poor sanitation - .....ANSWER ...✔✔ Lack of
cleanliness and hygiene practices
NSG-401 FINAL EXAM QUESTIONS WITH 100%
SOLVED ANSWERS!!
Infectious disease - .....ANSWER ...✔✔ Presence and
replication of an infectious agent in the tissues of the
host with manifestations of signs and symptoms
Epidemiological Triad - .....ANSWER ...✔✔ Three
components of infectious disease: agent, host, and
environment
Chain of infection - .....ANSWER ...✔✔ Sequence of
events that allows an infectious disease to spread
Agent - .....ANSWER ...✔✔ Virus, bacteria, fungi,
protozoa, worm that causes an infectious disease
Host - .....ANSWER ...✔✔ Person or animal infected
by the agent in an infectious disease
,2|Page
Environment - .....ANSWER ...✔✔ How the disease
spreads through water, food, air, etc in an infectious
disease
Staph - .....ANSWER ...✔✔ Bacterial agent in the
chain of infection in an infectious disease
Communicable disease - .....ANSWER ...✔✔
Contagious disease with portal of entry, means of
transmission, and portal of exit
Portal of entry - .....ANSWER ...✔✔ The route through
which an infectious agent enters a susceptible host
Means of transmission - .....ANSWER ...✔✔ The way
an infectious agent is spread from one person to another
Portal of exit - .....ANSWER ...✔✔ The route through
which an infectious agent leaves an infected person
Infection - .....ANSWER ...✔✔ Presence and
replication of an infectious agent in the tissues of the
host with manifestations of signs and symptoms
,3|Page
Endemic - .....ANSWER ...✔✔ Constant presence of a
disease in a geographic population
Epidemic - .....ANSWER ...✔✔ Spread of a specific
outbreak of a disease
Pandemic - .....ANSWER ...✔✔ Global outbreak of a
disease
Outbreak - .....ANSWER ...✔✔ Localized increase in
the incidence of a disease
Host factors - .....ANSWER ...✔✔ Physical and
emotional health, sex, immune status, age that determine
the risk for infection
Upper respiratory infection - .....ANSWER ...✔✔
Infection of the nose, throat, and sinuses
Mechanism of transmission - .....ANSWER ...✔✔ The
way a disease is spread from one person to another
, 4|Page
Airborne - .....ANSWER ...✔✔ Transmission of disease
through the air
Foodborne illnesses - .....ANSWER ...✔✔ Illnesses
caused by consuming contaminated food
Campylobacter - .....ANSWER ...✔✔ Bacterial agent
linked to chicken that causes diarrhea
Salmonella - .....ANSWER ...✔✔ Bacterial agent that
can be found in different foods and causes food
poisoning
E. Coli - .....ANSWER ...✔✔ Bacterial agent that can
be found in different foods and causes food poisoning
Disease emergence - .....ANSWER ...✔✔ Increase in
the occurrence of a disease in a population
Poor sanitation - .....ANSWER ...✔✔ Lack of
cleanliness and hygiene practices
