NR 503 Week 8 FINAL EXAM Latest

Question 1Which 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 quarantineRationale:The incubation period is defined as the interval from receipt of infection tothe time of onset of clinical illness. Accordingly, individuals may transmit infectious agentsduring the incubation period as they show no signs of disease that would enable the isolation ofsick individuals by quarantine Question 2Chicken pox is a highly communicable disease. It may be transmitted by direct contact with aperson infected with the varicella-zoster virus (VZV). The typical incubation time is between 10to 20 days. A boy started school 2 weeks after showing symptoms of chicken pox including mildfever, skin rash, and fluid-filled blisters. One month after the boy returned to school, none of hisclassmates 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 classThe disease is spread by contact with an infected individual who can transmit the agent (VZV) toimmunologically naive persons during the incubation period and for several days after onset ofclinical illness. Since the boy started school 14 days after showing signs consistent with chickenpox, it is most likely that he was no longer infectiou