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Lab #11 Infectious Diseases: The spread of Spanish Flu

Lab #11 Infectious Diseases: The spread of Spanish Flu. Introduction. Diseases caused by viruses and bacteria can spread rapidly. Often, a virus or bacteria is transmitted before the carrier even knows they are infected.

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Lab #11 Infectious Diseases: The spread of Spanish Flu

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  1. Lab #11Infectious Diseases:The spread of Spanish Flu

  2. Introduction • Diseases caused by viruses and bacteria can spread rapidly. • Often, a virus or bacteria is transmitted before the carrier even knows they are infected. • The purpose of today’s activity is to trace how quickly an infection can spread through our classroom population. • There will be one individual carrier in the classroom • Each person will have four casual encounters.

  3. Spanish Flu • Occurred from 1918-1920 • H1N1 Influenza A virus (RNA virus) • Deadly because it caused immune system to attack healthy cells • Killed 20-50 million people worldwide • Pandemic = widespread infection • Young adults were most affected

  4. Spanish Flu Research • 1998 – virus excavated from frozen Inuit woman corpse in Alaska • 2005 – Spanish Flu virus genome coded • 2007 – Using monkeys, scientists found that virus makes immune system overreact • 2009 – Scientists find that Spanish Flu virus is the same virus as Swine Flu virus • 2009 – Bill and Melinda Gates Foundation gave scientists at University of Wisconsin- Madison $9.5 million to study flu virus mutations

  5. Problem & Hypothesis • Problem: • How quickly will infection (Spanish flu) spread in the classroom from just one infected person? • Hypothesis: • In your own words answer the above question.

  6. Materials • Vials with a numbered cap • Clear liquid • indicator

  7. Procedure 23 Get a vial with clear liquid record your number 5 ml Exchange with anyone in class. After you have exchanged with 4 partners check with Ms. G to see if you’re infected. 8 ml Pour 3 ml into partners solution, shake and return the 3 ml. 2 ml

  8. Data • Your vial # _______ Your results______

  9. Patient zero

  10. Conclusion • What is a virus? • What type of diseases are caused by viruses? • How was the virus transmitted in the classroom? • How many individuals were infected at the end of the activity?

  11. Conclusion • Was your hypothesis supported or rejected? • What vial number was the first to have the infection? • How did you discover the origin of the infection? • What would happen if the number of exchanges increased or decreased in the classroom? • What course of action would be appropriate if a dangerous virus emerged in a small community?

  12. How to prevent the spread of diseases • Frequent hand washing • Avoid touching eyes, nose or mouth • Cough or sneeze into your arm • Dispose of used tissue • Avoid sick people http://www.depletedcranium.com/sneeze.jpg Adapted from Centers for Disease Control and Prevention website

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