NR 503 Final exam Question
And Answers
(Complete solutions and resources for the
course exam)
Chapters 2-4
1. Which of the following is a condition which may occur during the incubation
period?
a. Onset of clinical illness
b. Receipt of infection
c. Signs & symptoms of disease
d. Transmission of infection
e. Isolation of disease carrier through quarantine
Rationale: The incubation period is defined as the interval from receipt of
infection to the time of onset of clinical illness. Accordingly, individuals may
transmit infectious agents during the incubation period as they show no signs of
disease that would enable the isolation of sick individuals by quarantine.
2. Chicken pox is a highly communicable disease. It may be transmitted by direct
contact with a person infected with the varicella-zoster virus (VZV). The typical
incubation time is between 10 to 20 days. A boy started school 2 weeks after
showing symptoms of chicken pox including mild fever, skin rash, & fluid-filled
blisters. One month after the boy returned to school, none of his classmates had
been infected by VZV. The main reason was:
a. Herd immunity
b. All had been immunized prior to the school year
c. Contact was after infectious period
d. Subclinical infections were not yet detected
e. Disease was endemic in the class
Rationale: The disease is spread by contact with an infected individual who can
transmit the agent (VZV) to immunologically naive persons during the
incubation period & for several days after onset of clinical illness. Since the boy
started school 14 days after showing signs consistent with chicken pox, it is
most likely that he was no longer infectious.
NR 503 Final exam Question And Answers (Complete solutions and resources for
the course exam)
And Answers
(Complete solutions and resources for the
course exam)
Chapters 2-4
1. Which of the following is a condition which may occur during the incubation
period?
a. Onset of clinical illness
b. Receipt of infection
c. Signs & symptoms of disease
d. Transmission of infection
e. Isolation of disease carrier through quarantine
Rationale: The incubation period is defined as the interval from receipt of
infection to the time of onset of clinical illness. Accordingly, individuals may
transmit infectious agents during the incubation period as they show no signs of
disease that would enable the isolation of sick individuals by quarantine.
2. Chicken pox is a highly communicable disease. It may be transmitted by direct
contact with a person infected with the varicella-zoster virus (VZV). The typical
incubation time is between 10 to 20 days. A boy started school 2 weeks after
showing symptoms of chicken pox including mild fever, skin rash, & fluid-filled
blisters. One month after the boy returned to school, none of his classmates had
been infected by VZV. The main reason was:
a. Herd immunity
b. All had been immunized prior to the school year
c. Contact was after infectious period
d. Subclinical infections were not yet detected
e. Disease was endemic in the class
Rationale: The disease is spread by contact with an infected individual who can
transmit the agent (VZV) to immunologically naive persons during the
incubation period & for several days after onset of clinical illness. Since the boy
started school 14 days after showing signs consistent with chicken pox, it is
most likely that he was no longer infectious.
NR 503 Final exam Question And Answers (Complete solutions and resources for
the course exam)
