Question 1

Which type of disease transmission is best illustrated by the first image (raccoon with open mouth)?

Accepted Answer

Zoonotic direct contact transmission

Question 2

The second image (syringe) best represents which mode of disease transmission?

Accepted Answer

Parenteral transmission

Question 3

The third image (pregnant woman) is an example of which type of disease transmission?

Accepted Answer

Vertical transmission

Question 4

The fourth image (person sneezing) demonstrates which mode of transmission?

Accepted Answer

Airborne transmission

Question 5

The fifth image (cockroach) is most closely associated with which type of vector transmission?

Accepted Answer

Mechanical vector transmission

Question 6

The sixth image (disease progression graph, highlighted at stage 3) represents which stage of infectious disease?

Accepted Answer

Acute phase

Question 7

Which of the following best describes a true pathogen?

Accepted Answer

It can cause disease in healthy hosts.

Question 8

Which of the following is an example of an endogenous source of infection?

Accepted Answer

A patient develops a urinary tract infection from their own gut flora.

Question 9

Which of the following best describes a pandemic?

Accepted Answer

An epidemic that spreads to more than one continent.

Question 10

Which of the following is a sign, not a symptom, of disease?

Accepted Answer

Fever

Question 11

A patient recovers from an infection, but the pathogen remains dormant in their body and may reactivate later. This patient is best described as:

Accepted Answer

A chronic carrier

Question 12

Which of the following is NOT a characteristic of the prodromal phase?

Accepted Answer

Symptoms are severe and specific

Question 13

Which of the following is an example of vehicle transmission?

Accepted Answer

A person gets salmonella from eating contaminated chicken.

Question 14

Which of the following best describes the convalescent period of an infectious disease?

Accepted Answer

The patient recovers and returns to a normal healthy state.

Question 15

Which of the following is a zoonotic disease?

Accepted Answer

Rabies

Question 16

Which of the following best describes the difference between pathogenicity and virulence?

Accepted Answer

Pathogenicity is the ability to cause disease; virulence is the severity of disease.

Question 17

Which of the following is an example of a communicable but not highly contagious disease?

Accepted Answer

Tuberculosis

Question 18

Which of the following factors can influence the length of the incubation period?

Accepted Answer

All of the above

Question 19

A patient stops taking antibiotics during the period of decline. What is a possible consequence?

Accepted Answer

The infection may return.

Question 20

Which of the following is an example of an emerging pathogen?

Accepted Answer

SARS-CoV-2

Principles of Infectious Disease and Epidemiology: Transmission and Disease Progression

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