Disease Spread Question and Answers (100% CORRECT)

Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Why do you think it is important to cover your mouth when you cough? __It is important to cover your mouth because if you do not cover your mouth germs coul ...

Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Why do you think it is important to cover your mouth when you cough? __It is important to cover your mouth because if you do not cover your mouth germs could spread______ 2. Why should you always wash your hands before you eat? __________________________ __\You should wash your hands before you eat just incase your hands have germs on them that way you don’t transfer germs to your food and from the food to your mouth________________ Gizmo Warm-up When a person has a disease, his or her normal body functions are disrupted. Some diseases, such as diabetes and most cancers, are not spread from one person to another. But other diseases, such as the flu and strep throat, can be spread. These diseases are known as infectious diseases. Infectious diseases are caused by viruses, bacteria, and other agents known as pathogens. In the Disease Spread Gizmo, you will be able to observe how various pathogens can spread through a group of people. Click Play ( ) and observe. 1. Describe what happened on the SIMULATION pane: _______________________________ _As the people move around more people get affected by food_____ 2. Look at the color key on the bottom right of the Gizmo. What is happening when a person changes color? On the simulation, a person changes color to indicate the person has become infected with a disease. The color green indicates the person is infected with a foodborne disease Activity A: Person-to-person transmission Get the Gizmo ready: ● Click Reset ( ). ● On the CONTROLS tab under Active Diseases, turn off Foodborne and turn on Person to person. ● Set the Number of people to 5. Question: What factors affect how quickly a pathogen spreads from person to person This study source was downloaded by 100000796615030 from CourseHero.com on 07-07-2021 06:32:52 GMT -05:00 https://www.coursehero.com/file/61376382/Copy-of-Juliette-Baldwin-Disease-Spread-Gizmodocx/ This study resource was shared via CourseHero.com 1. Predict: Some pathogens are spread directly from one person to another. This can happen when people come into direct contact or share items, such as drinking glasses. What do you think might affect how quickly a pathogen is spread from person to person? Population density and ease of transmission or the two primary factors affecting the infection rate of a disease 2. Identify: Select the SIMULATION tab on the left and the TABLE tab on the right. (You will want the table tab open to answer question C.) A. What does the purple person represent? An infected person B. Click Play, and observe the simulation for a while. What must happen for the disease to spread from one person to another? People must come into direct contact C. How long did it take to infect five people? _15hr_________ 3. Experiment: Click Reset. Change the Number of people to 15. Click Play, and record how long it takes to infect five people. Then repeat the experiment when there are 25 people and 35 people in the room. Number of people in room Time required to infect five people (hr) 15 5.2hr 25 4.3hr 35 3.0hr 4. Interpret: Study the data you collected. What trend do you see in the data, and how would you explain it? As the number of people in the room increased, the time required to infect five people decreased. This most likely occurred because the contact between people became more common as the room got more crowded, making it easier. For the pathogen. To spread 5.Experiment: Not all pathogens are equally infectious. Click Reset. Set the Number of people to 20. Under Probability of transmission, select Low for Person to person. On the SIMULATION tab, click Play. Record the time it takes to infect five people. Then repeat the experiment with a medium and high probability of transmission. (Note: For the “Medium” setting, move the slider half-way between the Low and High positions.) Probability of Transmission Time required to infect five people (hr) Low 74.6hr Medium 5.9hr