HLPR 222 Questions & Answers Latest Guide

1. Which of the following is a condition which may occur during the incubation period? - Transmission of infection 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: - Contact was after infectious period 3. The ability of a single person to remain free of clinical illness following exposure to an infectious agent is known as: - Immunity 4. Which of the following is characteristic of a single-exposure, common-vehicle outbreak? - The epidemic curve has a normal distribution when plotted against the logarithm of time 5. Which of the following reasons can explain why a person who did not consume the infective food item got sick? - ((((They were directly exposed to persons who did eat the infective food item Diarrhea is a general symptom consistent with a number of illnesses There may have been an inaccurate recall of which foods were eaten)))) ALL OF THE ABOVE 6. Which of the following are examples of a population prevalence rate? - The number of persons with hypertension per 100,000 population 7. What would be the effect on age-specific incidence rates of uterine cancer if women with hysterectomies were excluded from the denominator of incidence calculations assuming that most women who have had hysterectomies are older than 50 years of age. - Rates would increase in women older than 50 years of age but may decrease in younger women as they get older. 8. Which of the following is an advantage of active surveillance? - More accurate due to reduced reporting burden for health care providers 9. The population of a city on February 15, 2005, was 36,600. The city has a passive surveillance system that collects hospital and private physician reports of influenza cases every month. During the period between January 1 and April 1, 2005, 2,200 new cases of influenza occurred in the city. Of these cases, 775 persons were ill with influenza according to surveillance reports on April 1, 2005. The monthly incidence rate of active cases of influenza for the 3-month period was: - 20 per 1,000 population 10. The population of a city on February 15, 2005, was 36,600. The city has a passive surveillance system that collects hospital and private physician reports of influenza cases every month. During the period between January 1 and April 1, 2005, 2,200 new cases of influenza occurred in the city. Of these cases, 775 persons were ill with influenza according to surveillance reports on April 1, 2005. The prevalence rate of active influenza as of April 1, 2005, was: - 20 per 1,000 population