NR 503 WEEK 8 QUIZ EXAM
Question 1
Which of the following is a condition which may occur during the incubation
period?
•Onset of clinical illness
•Receipt of infection
•Signs and symptoms of disease
•Transmission of infection
•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.
Question 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, and fluid-filled
blisters. One month after the boy returned to school, none of his classmates had
been infected by VZV. The main reason was:Herd immunity
•All had been immunized prior to the school year
•Contact was after infectious period
•Subclinical infections were not yet detected
•Disease was endemic in the class
The disease is spread by contact with an infected individual who can transmit the
agent (VZV) to immunologically naive persons during the incubation period and for
several days after onset of clinical illness. Since the boy started school 14 days after
