Latest NR 503 Week 8 Final Exam with ANSWERS and Rationales 2023/2024 (Graded A+)

Latest NR 503 Week 8 Final Exam with ANSWERS and Rationales 2023/2024 (Graded A+) 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 showing signs consistent with chicken pox, it is most likely that he was no longer infectious. NR 503 Week 8 Final Exam Review; Questions with Rationales Graded A+ Question 3 The ability of a single person to remain free of clinical illness following exposure to an infectious agent is known as: Hygiene Vaccination Herd immunity  Immunity Latency Immunity is the capacity of a single individual to avoid disease susceptibility when exposed to an infectious agent. Herd immunity is a population characteristic. For certain diseases, individual immunity can be acquired by vaccination, but this is not true for all infectious