Chamberlain College of Nursing NR 503 Midterm Exam. Questions and Answers (Graded A) (CORRECT ANSWERS ARE HIGHLIGHTED) 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 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