Disease Spread SE

Name: Shevi Goldblatt Date: 3/25/2015 Student Exploration: Disease Spread Vocabulary: disease, epidemic, infect, infectious disease, pathogen 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 Look at the color key on the bottom right of the Gizmo. What is happening when a person changes color? They are getting infected This study source was downloaded by from CourseH on 02-20-2023 03:48:12 GMT -06:00 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? 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? How much contact there is, where the contact point is, and how long you are in contact with the infected person 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? Infected humans B. Click Play, and observe the simulation for a while. What must happen for the disease to spread from one person to another? They must come in contact C. How long did it take to infect five people? 52 hours 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 75 hours 25 26 hours 35 32 hours 4. Interpret: Study the data you collected. What trend do you see in the data, and how would you explain it? The more people there are, the faster the disease spreads