Question 1

Morbidity statistics more precisely define the health of a population than mortality statistics.

Accepted Answer

A) True 
 B)False

Question 2

A disease showing a relatively slow,progressive rise followed by a gradual decline in incidence is indicative of a(n)

Accepted Answer

A)  host-to-host epidemic. 
B)  common source epidemic. 
C)  biological weapon. 
D)  endemic disease. 
A)  host-to-host epidemic. 
B)  common source epidemic. 
C)  biological weapon. 
D)  endemic disease.

Question 3

Middle eastern respiratory syndrome (MERS)is caused by

Accepted Answer

A)  Streptococcus pneumoniae. 
B)  the influenza virus. 
C)  a coronavirus. 
D)  a rhinovirus. 
A)  Streptococcus pneumoniae. 
B)  the influenza virus. 
C)  a coronavirus. 
D)  a rhinovirus.

Question 4

Diseases that are good candidates for eradication have

Accepted Answer

A)  only a human reservoir. 
B)  no asymptomatic phase. 
C)  an environmental reservoir. 
D)  only a human reservoir and no asymptomatic phase. 
A)  only a human reservoir. 
B)  no asymptomatic phase. 
C)  an environmental reservoir. 
D)  only a human reservoir and no asymptomatic phase.

Question 5

You are planning a whitewater rafting vacation in Kenya.Based on what you know about microbiology,what precautions should you take to return in the best of health?

Accepted Answer

Caution should be taken to (1)not transf

Question 6

An endemic disease is constantly present,usually at low incidence,in a population.

Accepted Answer

A) True 
 B)False

Question 7

Many pathogenic organisms require living hosts as reservoirs to survive.

Accepted Answer

A) True 
 B)False

Question 8

Disease cases that exhibit new syndromes or characteristics or are linked to new pathogens are surveyed through regional laboratories and considered ________ cases.

Accepted Answer

A)  zoonotic 
B)  index 
C)  endemic 
D)  epidemic 
A)  zoonotic 
B)  index 
C)  endemic 
D)  epidemic

Question 9

A large number of cases of a particular disease observed in a relatively short period of time in an area that previously experienced only sporadic cases of the disease is known as a(n)

Accepted Answer

A)  pandemic. 
B)  outbreak. 
C)  endemic. 
D)  zoonosis. 
A)  pandemic. 
B)  outbreak. 
C)  endemic. 
D)  zoonosis.

Question 10

Influenza pandemics occur cyclically because

Accepted Answer

A)  less than 100% of the population is immunized. 
B)  new strains emerge due to reassortment between bird, swine, and human variants. 
C)  the vector is seasonal. 
D)  there are environmental reservoirs that release the virus during particular seasons. 
A)  less than 100% of the population is immunized. 
B)  new strains emerge due to reassortment between bird, swine, and human variants. 
C)  the vector is seasonal. 
D)  there are environmental reservoirs that release the virus during particular seasons.

Question 11

Give an example of an acute and a chronic carrier of disease.What disease characteristics allow for chronic carriers to play significant roles in the spread of the disease? How are diseases with chronic carriers controlled?

Accepted Answer

Acute disease carriers contain only the

Question 12

Rodents have been associated with numerous severe epidemics in the past,prompting microbiologist Hans Zinsser in the 1930s to write a book,Rats,Lice,and History,in which he documented the important role of rodents in epidemics.Discuss why rodent control is still desirable,even in an age when it is perceived that the "magic bullets" of chemotherapy and immunization to control infectious disease are readily available.

Accepted Answer

Rodents,among other animals,can serve as

Question 13

The term ________ is applied to strains and preparations of Bacillus anthracis that exhibit properties that enhance dissemination and use as biological weapons.

Accepted Answer

A)  weaponized 
B)  virulized 
C)  category A 
D)  infectious 
A)  weaponized 
B)  virulized 
C)  category A 
D)  infectious

Question 14

Changes in food processing and distribution can increase the incidence of new and emerging diseases.

Accepted Answer

A) True 
 B)False

Question 15

Many parasites,such as those that cause malaria,use antigenic variation to decrease virulence within a specific host.

Accepted Answer

A) True 
 B)False

Question 16

The incidence of HIV/AIDS among transfusion recipients has

Accepted Answer

A)  increased since the discovery of HIV. 
B)  decreased since the discovery of HIV. 
C)  remained the same since the discovery of HIV. 
D)  never been more than a few individuals per year. 
A)  increased since the discovery of HIV. 
B)  decreased since the discovery of HIV. 
C)  remained the same since the discovery of HIV. 
D)  never been more than a few individuals per year.

Question 17

How might climate change impact the incidence of a disease? Use a specific example to illustrate your answer.

Accepted Answer

Climate change could increase temperatur

Question 18

Most cases of mosquito-transmitted diseases occur in

Accepted Answer

A)  the summer and fall seasons. 
B)  tropical and sub-tropical regions. 
C)  rural areas. 
D)  tropical and sub-tropical regions or during the summer and fall seasons. 
A)  the summer and fall seasons. 
B)  tropical and sub-tropical regions. 
C)  rural areas. 
D)  tropical and sub-tropical regions or during the summer and fall seasons.

Question 19

A nonliving source of an infectious agent that infects a large number of people is called a

Accepted Answer

A)  fomite. 
B)  reservoir. 
C)  vector. 
D)  vehicle. 
A)  fomite. 
B)  reservoir. 
C)  vector. 
D)  vehicle.

Question 20

Which of the following emergence factors has contributed to the HIV/AIDS epidemic?

Accepted Answer

A)  climate change 
B)  rapid pathogen adaptation and change 
C)  increasing travel to endemic areas 
D)  exotic pet and meat trade 
A)  climate change 
B)  rapid pathogen adaptation and change 
C)  increasing travel to endemic areas 
D)  exotic pet and meat trade

Exam 28: Epidemiology

Morbidity statistics more precisely define the health of a population than mortality statistics.

A disease showing a relatively slow,progressive rise followed by a gradual decline in incidence is indicative of a(n)

Middle eastern respiratory syndrome (MERS)is caused by

Diseases that are good candidates for eradication have

You are planning a whitewater rafting vacation in Kenya.Based on what you know about microbiology,what precautions should you take to return in the best of health?

An endemic disease is constantly present,usually at low incidence,in a population.

Many pathogenic organisms require living hosts as reservoirs to survive.

Disease cases that exhibit new syndromes or characteristics or are linked to new pathogens are surveyed through regional laboratories and considered ________ cases.

A large number of cases of a particular disease observed in a relatively short period of time in an area that previously experienced only sporadic cases of the disease is known as a(n)

Influenza pandemics occur cyclically because

Give an example of an acute and a chronic carrier of disease.What disease characteristics allow for chronic carriers to play significant roles in the spread of the disease? How are diseases with chronic carriers controlled?

The term ________ is applied to strains and preparations of Bacillus anthracis that exhibit properties that enhance dissemination and use as biological weapons.

Changes in food processing and distribution can increase the incidence of new and emerging diseases.

Many parasites,such as those that cause malaria,use antigenic variation to decrease virulence within a specific host.

The incidence of HIV/AIDS among transfusion recipients has

How might climate change impact the incidence of a disease? Use a specific example to illustrate your answer.

Most cases of mosquito-transmitted diseases occur in

A nonliving source of an infectious agent that infects a large number of people is called a

Which of the following emergence factors has contributed to the HIV/AIDS epidemic?

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