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NR 503 Midterm Exam – Epidemiology.Questions and Answers NR 503 Midterm Exam – Epidemiology.Questions and Answers NR 503 Midterm Exam – Epidemiology.Questions and Answers
<b>Question 1 </b><br/>Which of the following is a condition which may occur during the incubation period? <br/> Onset of clinical illness <br/> Receipt of infection <br/> Signs and symptoms of disease <br/> Transmission of infection <br/> Isolation of disease carrier through quarantine <br/><b>That's correct! </b><br/>The incubation period is defined as the interval from receipt of infection to the time of onset of <br/>clinical illness. Accordingly, individuals may transmit infectious agents during the incubation <br/>period as they show no signs of disease that would enable the isolation of sick individuals by <br/>quarantine. <b>Question 2 </b><br/>Chicken pox is a highly communicable disease. It may be transmitted by direct contact with a person <br/>infected with the varicella-zoster virus (VZV). The typical incubation time is between 10 to 20 days. A <br/>boy started school 2 weeks after showing symptoms of chicken pox including mild fever, skin rash, and <br/>fluid-filled blisters. One month after the boy returned to school, none of his classmates had been infected <br/>by VZV. The main reason was: <br/> Herd immunity <br/> All had been immunized prior to the school year <br/> Contact was after infectious period <br/> Subclinical infections were not yet detected <br/> Disease was endemic in the class <br/><b>That's correct! </b><br/>The disease is spread by contact with an infected individual who can transmit the agent (VZV) <br/>to immunologically naive persons during the incubation period and for several days after onset <br/>of clinical illness. Since the boy started school 14 days after showing signs consistent with <br/>chicken pox, it is most likely that he was no longer infectious. <b>Question 3 </b><br/>The ability of a single person to remain free of clinical illness following exposure to an infectious agent is <br/>known as: <br/> Hygiene <br/> Vaccination <br/> Herd immunity <br/> Immunity <br/> Latency <br/><b>That's correct! </b><br/>Immunity is the capacity of a single individual to avoid disease susceptibility when exposed to <br/>an infectious agent. Herd immunity is a population characteristic. For certain diseases, <br/>individual immunity can be acquired by vaccination, but this is not true for all infectious <br/>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>
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