TRANSMISSION AND PREVENTION OF INFECTIOUS DISEASES
Maria Trujillo
Introduction
Standards
Objectives
Activities
Assessment
Results
Resources

 
 
 
 
 

Home Room 
 

  Activities 
 

  Materials 
 

Your Grade 
 

Teacher's Corner
 
 
 
 
 
 
 
 


 Escherichia coli
SEM (Scanning Electron Microscope)
There are hundreds of strains of the bacterium Escherichia coli.  Most strains are harmless and live in the intestines of healthy humans and animals.  The strain 
E. coli 0157:H7 produces a powerful toxin and can cause severe illness.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

The scanning electron micrograph above, shows a human macrophage (gray) approaching a chain of Streptococcus pyogenes (yellow). Riding atop the macrophage is a spherical lymphocyte.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Streptococcus pyogenes
These spherical bacteria are common inhabitants of the throat. Sometimes they can cause strep throat or even more serious disease like necrotizing fasciiti (called flesh-eating bacteria in tabloid-speak).
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Last Revised: 5/29/01
Introduction
  This unit is to inform the students about transmission of infectious disease and how to prevent transmission.  They will learn about the two main causative agents:  bacteria and viruses.
Subject:  Biology
Topic:Transmission and prevention of infectious diseases
Grade Level: 10
Student Lesson URL:http://ctap295.ctaponline.org/~mtrujill/index.html
Standards Addressed

Grade 10
Science: Biology/Life Sciences

10. Organisms have a variety of mechanisms to combat disease.
As a basis for understanding the human immune response, students know:
a. the role of the skin in providing nonspecific defenses against infection. 
b. the role of antibodies in the body's response to infection. 
c. how vaccination protects an individual from infectious diseases. 
d. there are important differences between bacteria and viruses, with respect to their requirements for growth and replication, the primary defense of the body against them, and effective treatment of infections they cause.


 
 

Instructional Objectives
 

  • Name some causes of infectious disease.
  • List several ways that infectious diseases are spread.
  • Identify the body's first  and second lines of defense against disease.
  • Explain how antibodies fight disease.
  • Recognize the difference between natural and acquired  immunity.
  • List three ways that bacteria are helpful to humans.
  • Specify how antibiotic resistance has come about, and describe ways that bacteria resist antibiotics.
  • Describe the ways that bacteria can cause disease in humans.
  • Describe how the skin and mucous membranes protect the body against pathogens.
  • Identify and describe the components of the immune system.
  • Expain how a vaccine works.

    •  

    Student Activities
    Students will identify harmful and helpful bacteria and how to prevent the transmission of harmful bacteria and viruses.
     

    Introductory Activity

    Read "What are bacteria?"
    http://www.healthatoz.com/atoz/bacterial/bacwhat.asp

    Read "What is a Virus?"
    http://www.howstuffworks.com/virus-human1.htm
     

    Microviewer slides and worksheet: Harmful bacteria
                                              Helpful bacteria
                                              Viruses 
     

    RETURN TO Web Resources & Supplementary Materials
     
     
      


    Enabling Activity(ies)
     

    To see how your body battles microbial invaders, play the "Infection!" game. You'll see how your body defends itself against infection. 

    Simulating Disease Transmission
    page 974-975 Modern Biology byHolt, Rinehart, and Winston.

    Read "How does a virus infect your?"
    http://www.howstuffworks.com/virus-human2.htm

    Read "What causes a bacterial infection?"
    http://www.healthatoz.com/atoz/bacterial/baccause.asp

    Download and read the brochure on hand washing and view survey.http://www.washup.org/

    Read "An Ounce of prevention: Keeps the Germs Away"
    http://www.cdc.gov/ncidod/op/index.htm

    Read "How can I prevent a bacterial infection?"
    http://www.healthatoz.com/atoz/bacterial/bacprevent.asp

    Read "How can you reduce the spread of viruses?"
    http://www.howstuffworks.com/virus-human3.htm

    Read "Healthy lifestyle tips for preventing infections."
    http://www.healthatoz.com/atoz/Bacterial/bactip.asp

    RETURN TO Web Resources & Supplementary Materials
     
     
      



    Culminating Activity

    Exam
    Design an infectious disease pamphlet and present it to the class.
     
     
     

    RETURN TO Web Resources & Supplementary Materials
     
      



     

    Assessment

    Pre-Test
    On-line quizzes.
    Post-Test:1, 2, 3, 4
     

    Evaluation Rubrics:

        Oral presentation rubric

                Pamphlet rubric 



     
     

    Results

    Test Results: 
                          Chart 1  Pre-exam and Post-exam comparisons
                          Chart 2   Post-exam Results 



     

    Web Resources & Supplementary Materials

    Introductory Activity
     

    Enabling Activity
     

    Culminating Activity
      



     
     
     
     
     
     

      Maria Trujillo
    Red Bluff Union High School
    Red Bluff, California http://www.rbuhsd.k12.ca.us/
     
     
     
     

    Power Point Presentation
    mtrujill@rbuhsd.k12.ca.us