1. Chapter 18 Communicable Diseases Lesson 1 Preventing the Spread of Disease Next >> Teacher’s notes are available in the notes section of this presentation.

2.  disease Any condition that interferes with the proper functioning of the body and mind A disease that can be passed to a person from another person, animal, or object  communicable disease Disease-causing organisms that are so small they can only be seen through a microscope  pathogens A condition that occurs when pathogens enter the body, multiply, and cause harm  infection

3.  viruses The smallest pathogens Tiny one-celled organisms  bacteria Organisms that are more complex than bacteria, but cannot make their own food  fungi One-celled organisms that are more complex than bacteria  protozoa

4.  vector An organism, such as an insect, that transmits pathogens Cleanliness  hygiene

5. In this lesson, you will learn to  name some causes of communicable disease.  explain how germs are spread.  describe how to protect yourself against pathogens.

6. Common Diseases A cold is one kind of disease. I.Disease Any condition that interferes with the proper functioning of the body or mind

7. A cold is a communicable disease. A.Communicable Disease A disease that can be passed to a person from another person, animal, or object

8. Common Diseases 1. Pathogen is a fancy word for germ. 2. Pathogens Disease-causing organisms that are so small they can only be seen through a microscope

9. Germs can cause an infection. This is an outer ear infection--> Infection A condition that occurs when pathogens enter the body, multiply, and cause harm

10. Types of Pathogens Viruses cause common diseases, such as colds and the flu. Most viral infections cannot be treated and cured with antibiotics. Viruses The smallest pathogens

11. Virus Picture

12. Types of Pathogens Bacteria that live in your digestive tract help you digest food. Other bacteria are harmful. Bacteria Tiny one-celled organisms Most bacterial infections can be treated and cured with antibiotics.

13. Bacteria Picture

14. Types of Pathogens Fungi are primitive life forms that feed on organic materials. Fungi Organisms that are more complex than bacteria, but cannot make their own food Fungi cause ringworm and athlete's foot.

15. Fungi Picture

16. Types of Pathogens Malaria is a disease caused by a protozoa that can live in mosquitoes. If an infected mosquito bites a person, the protozoa transfers into the body through the skin. Protozoa One-celled organisms that are more complex than bacteria

17. Protozoa

18. Types of Pathogens PathogensDiseases Viruses The smallest pathogens Colds, influenza, hepatitis, chicken pox, measles, mumps, mononucleosis, herpes, HIV/AIDS, fever, polio, rabies, viral pneumonia Bacteria Tiny one-celled organisms Pink eye, pertussis (whooping cough), strep throat, tuberculosis, Lyme disease, most foodborne illnesses, diphtheria, bacterial pneumonia, cholera Fungi Organisms that are more complex than bacteria, but can’t make their own food Athlete's foot, ringworm, Infantigo Protozoa One-celled organisms that are more complex than bacteria Amoebic dysentery, malaria

19. How are Germs Spread? Direct contact with others is skin to skin contact. Examples include: Sexual Activity, Kissing, Shaking Hands

20. How are Germs Spread? Indirect contact with others is touching infected objects. Examples include: Sharing a Drinking Glass, Touching a Door Handle after Another Person has Touched a Handle

21. How Do Pathogens Spread? 1.Direct contact with others 2.Indirect contact with others 3-4.Contact with contaminated food and water 5-6.Contact with animals or insects 7.Air-Coughs, sneezes

22. How Do Pathogens Spread? A pathogen-carrying mosquito is an example of a vector. C. Vector An organism, such as an insect, that transmits pathogens

23. How to Keep Pathogens from Spreading Practicing good personal hygiene is a good way to keep pathogens from spreading. Hygiene Cleanliness

24. How to Keep Pathogens from Spreading Eat nutritious foods and get enough physical activity and rest. Avoid close contact with people infected with a communicable disease, especially if they are still contagious. Never share eating or drinking utensils.

25. How to Keep Pathogens from Spreading Do not share toothbrushes or other personal hygiene items. Wash your hands thoroughly in warm, soapy water. Avoid touching your mouth, nose, and eyes. Do not bite your nails.

26. How to Keep Pathogens from Spreading Handle and prepare food safely, especially poultry and fish. Wash vegetables and cook meat thoroughly. Wipe counters thoroughly with a clean sponge or cloth. Replace sponges and cloths often. Keep your environment clean. Empty trash frequently and keep trash cans clean.

27. Helping Others Stay Healthy If you are ill, stay home from school and other public places. Avoid contact with others. When you sneeze, cover your mouth and nose, and turn your head away from others. Wash your hands right away. Wash your hands to the tune of ABC’s twice to make sure that you have washed them long enough!

28. What I Learned Give Examples What are four types of pathogens? Give an example of a disease caused by each kind. Lesson 1 Review

29. What I Learned Describe What are some ways that pathogens can be spread by indirect contact? Lesson 1 Review

30. Thinking Critically Analyze Why do you think it is important for teens to practice good personal hygiene? Lesson 1 Review

31. Thinking Critically Apply Brendan is coughing and sneezing at school. What should Brendan do to help prevent the spread of pathogens? Explain your answer. Lesson 1 Review

32. >> Main Menu >> Chapter 18 Assessment Click for: End of Chapter 18 Communicable Diseases Lesson 1 Preventing the Spread of Disease