NR 503 Midterm Exam – Epidemiology.Questions and Answers

NR 503 Midterm Exam – Epidemiology.Questions and Answers
NR 503 Midterm Exam – Epidemiology.Questions and Answers
NR 503 Midterm Exam – Epidemiology.Questions and Answers

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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 That's correct! 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 That's correct! 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. 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 That's correct! 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 diseases. <h1>Document Outline</h1><li>Question 1</li><li>Question 2</li><li>Question 3</li><li>Question 4</li><li>Question 5</li><li>Question 6</li><li>Question 7</li><li>Question 8</li><li>Question 9</li><li>Question 10</li><li>Question 11</li><li>Question 12</li><li>Question 13</li><li>Question 14</li><li>Question 15</li><li>Question 16</li><li>Question 17</li><li>Question 18</li><li>Question 19</li><li>Question 20</li><li>Question 21</li><li>Question 22</li><li>Question 23</li><li>Question 24</li><li>Question 25</li><li>Question 26</li><li>Question 27</li><li>Question 28</li><li>Question 29</li><li>Question 30</li><li>Question 31</li><li>Question 32</li><li>Question 33</li><li>Question 34</li><li>Question 35</li><li>Question 36</li><li>Question 37</li><li>Question 38</li><li>Question 39</li><li>Question 40</li><li>Question 41</li><li>Question 42</li><li>Question 43</li><li>Question 44</li><li>Question 45</li><li>Question 1</li><li>Question 2</li><li>Question 3</li><li>Question 4</li><li>Question 5</li><li>Question 6</li><li>Question 7</li><li>Question 8</li><li>Question 9</li><li>Question 10</li><li>Question 11</li><li>Question 12</li><li>Question 13</li><li>Question 14</li><li>Question 15</li><li>Question 16</li><li>Question 17</li><li>Question 18</li><li>Question 19</li><li>Question 20</li><li>Question 21</li><li>Question 22</li><li>Question 23</li><li>Question 24</li><li>Question 25</li><li>Question 26</li><li>Question 27</li><li>Question 28</li><li>Question 29</li><li>Question 30</li><li>Question 31</li><li>Question 32</li><li>Question 33</li><li>Question 34</li><li>Question 35</li><li>Question 36</li><li>Question 37</li><li>Question 38</li><li>Question 39</li><li>Question 40</li><li>Question 1</li><li>Question 2</li><li>Question 3</li><li>Question 4</li><li>Question 5</li><li>Question 6</li><li>Question 7</li><li>Question 8</li><li>Question 9</li><li>Question 10</li><li>Question 11</li><li>Question 12</li><li>Question 13</li><li>Question 14</li><li>Question 15</li><li>Question 1</li><li>Question 2</li><li>Question 3</li><li>Question 4</li><li>Question 5</li><li>Question 6</li><li>Question 7</li><li>Question 8</li><li>Question 9</li><li>Question 10</li><li>Question 11</li><li>Question 12</li><li>Question 13</li><li>Question 14</li><li>Question 15</li><li>Question 16</li><li>Question 17</li><li>Question 18</li><li>Question 19</li><li>Question 20</li><li>Question 21</li><li>Question 22</li><li>Question 23</li><li>Question 24</li><li>Question 25</li><li>Question 26</li><li>Question 27</li><li>Question 28</li><li>Question 29</li><li>Question 30</li><li>Question 31</li><li>Question 32</li><li>Question 33</li><li>Question 34</li><li>Question 35</li><li>Question 36</li><li>Question 37</li><li>Question 38</li><li>Question 39</li><li>Question 40</li><li>Question 41</li><li>Question 42</li><li>Question 43</li><li>Question 44</li><li>Question 45</li><li>Question 46</li><li>Question 47</li><li>Question 48</li><li>Question 49</li><li>Question 50</li><li>Question 51</li><li>Question 52</li><li>Question 53</li><li>Question 54</li><li>Question 55</li><li>Question 56</li><li>Question 57</li><li>Question 58</li><li>Question 59</li><li>Question 60</li><li>Question 61</li><li>Question 62</li><li>Question 63</li><li>Question 64</li><li>Question 65</li><li>Question 66</li><li>Question 67</li><li>Question 68</li><li>Question 69</li><li>Question 70</li><li>Question 1</li><li>Question 2</li><li>Question 3</li><li>Question 4</li><li>Question 5</li><li>Question 6</li><li>Question 7</li><li>Question 8</li><li>Question 9</li><li>Question 10</li><li>Question 11</li><li>Question 12</li><li>Question 13</li><li>Question 14</li><li>Question 15</li><li>Question 16</li><li>Question 17</li><li>Question 18</li><li>Question 19</li><li>Question 20</li><li>Question 21</li><li>Question 22</li><li>Question 23</li><li>Question 24</li><li>Question 25</li><li>Question 26</li><li>Question 27</li><li>Question 28</li><li>Question 29</li><li>Question 30</li>