Deck 5: Zoonotic and Vector-Borne Diseases

Question 1

Which of the following is an example of a zoonotic disease?

A) Whooping cough
B) Hand, foot, and mouth disease
C) Schistosomiasis
D) Measles
E) Anthrax

Answer 1

E

Question 2

Which of the following statements about zoonotic diseases is most likely to be true?

A) Immunocompromised persons may be at reduced risk for morbidity from zoonotic diseases.
B) Children younger than 5 may be at reduced risk for morbidity from zoonotic diseases.
C) An animal infected with a zoonotic agent may be free from symptoms.
D) A zoonotic disease is always associated with transmission by a vector.
E) None of these is correct.

Answer 2

C

Question 3

Methods for transmission of zoonotic pathogens include:

A) contact with the skin.
B) bite or scratch of an animal.
C) direct inhalation.
D) ingestion of contaminated foods.
E) All of these are correct.

Answer 3

E

Question 4

Examples of disease vectors are:

A) rats and mice.
B) mosquitoes.
C) ticks.
D) sand flies.
E) All of these are correct.

Question 5

Which of the following is an example of a vector-borne disease?

A) Trichinellosis
B) The "black death"
C) Q-fever
D) Measles
E) None of these is correct.

Question 6

The most deadly form of malaria is caused by:

A) P. falciparum.
B) P. vivax.
C) P. ovale.
D) P. malariae.
E) None of these is correct.

Question 7

Resurgence of malaria has been attributed to:

A) discontinuance of DDT spraying.
B) mosquitoes' development of resistance.
C) both discontinuance of DDT spraying and Mosquitoes' development of resistance.
D) evidence of increased person-to-person transmission.
E) discontinuance of DDT spraying, mosquitoes' development of resistance, and evidence of increased person-to-person transmission.

Question 8

The causative agent for malaria is a type of:

A) bacterium.
B) virus.
C) rickettsial agent.
D) protozoa.
E) prion.

Question 9

The causative agent for leishmaniasis is a type of:

A) bacterium.
B) virus.
C) rickettsial agent.
D) protozoa.
E) prion.

Question 10

Leishmaniasis is endemic to:

A) the midwestern United States.
B) Perth, Australia.
C) the Rocky Mountains.
D) the Middle East.
E) None of these is correct.

Question 11

The term abortive human rabies refers to a case that:

A) required an abortion in order to survive.
B) recovered without receiving intensive care.
C) was caused by Francisella tularensis.
D) also experienced comorbidity with monkeypox.
E) None of these is correct.

Question 12

In what sense is influenza a zoonotic disease?

A) It has animal reservoirs, especially birds and swine.
B) It is transmitted by "stealth" arthropods.
C) It is transmitted frequently by contact with wool.
D) The main reservoir is wild carnivores.
E) None of these is correct.

Question 13

Methods for the control of mosquito-borne diseases include:

A) monitoring the presence of viruses in sentinel chickens and birds.
B) removing standing water around the home.
C) use of mosquito-eating fish.
D) wearing long clothing.
E) All of these are correct.

Question 14

Which of the following statements about anthrax is false?

A) The agent has potential for use as a terrorist weapon.
B) The agent is a spore-forming bacterium.
C) The inhalational form is untreatable.
D) The general population is unlikely to become infected.
E) None of these is correct.

Question 15

Which of the following is true about rabies?

A) Human cases of rabies occur frequently in the United States.
B) Postexposure prophylaxis has prevented human rabies successfully.
C) Outside the United States, the most common vector is Gambian rats.
D) The disease has a low to medium fatality rate.
E) All of these are correct.

Question 16

During the sporogenic cycle, the malaria parasite is transferred to the human host when the mosquito takes a blood meal.

Question 17

Amastigotes are an extracellular form of the organism that has flagella, whereas promastigotes are nonflagellated intracellular forms.

Question 18

Cutaneous __________ is a concern of US military personnel stationed in endemic areas such as Afghanistan, Iraq, and Kuwait.

Question 19

The transmission of __________ to humans is associated with infected black-legged ticks that ingest blood by puncturing the skin of the host.

Question 20

Discuss the relationship of zoonoses to cases of viral hemorrhagic fevers.