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INFECTIOUS DISEASES

INFECTIOUS DISEASES. Chapter 28 Lessons 1 & 3 7 th Grade. Corrie DiSalvo Diana Duque Kristin Hopkins Lizbeth Londono Marcela Morado. Infectious Diseases. Diseases caused by the growth of pathogenic organisms in the body. Bacteria. A single-celled microorganism

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INFECTIOUS DISEASES

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  1. INFECTIOUS DISEASES Chapter 28 Lessons 1 & 3 7th Grade Corrie DiSalvo Diana Duque Kristin Hopkins Lizbeth Londono Marcela Morado

  2. Infectious Diseases Diseases caused by the growth of pathogenic organisms in the body

  3. Bacteria • A single-celled microorganism • Abundant in air, soil, and water • Harmful • Rapid Multiplication

  4. Viruses • Smallest known type of infectious agent • One of the worst enemies (HIV) • Unique Structure • Invades all forms of life

  5. Rickettsias • Way of Multiplying • Its Location • Transmission • Examples • Typhus and Rocky-Mountain spotted fever

  6. Protozoans • Single-celled organisms • 30 different types • Its Location

  7. Fungi • Simple organisms • Saprophytes • Prefers dark and damp environments • Invasion sites • Ex: ringworms or athlete's foot.

  8. Transmission Spread of infectious pathogens

  9. People • Direct contact • Ex. Hand shake, pregnant women to unborn child • Indirect contact • Ex. Cough, sneeze

  10. Animals • Dogs • Rabies • Mosquitoes • Malaria and dengue fever

  11. Contaminated Objects • Examples • Eating utensils • Glasses • Toothbrush • Door knobs • Pencils • Computer mouse

  12. Environment • Careless disposal of waste • Careless handling of foods • Pollution in air and water

  13. What’s wrong with this picture?

  14. Immune Response Nonspecific vs. Specific Resistance

  15. Nonspecific Resistance • Physical barriers • Mucus membranes and skin • Chemical barriers • Tears, saliva, and acidic digestive juices • Body cells • Phagocytes

  16. Specific Resistance • Lymphocytes • T-cells • B-cells • Antibodies • Macrophages

  17. Mission: Search and Destroy

  18. Prevention Immunity and Immunization

  19. Immunity • Active Immunity • The defense system the body develops to protect one from diseases • Passive Immunity • The temporary defense that an infant acquires from its mothers

  20. Immunization • Passive Immunization • Immediate, short lived protection • Active Immunization • vaccination

  21. Mother to baby Passive immunity Flu vaccine Active immunization Acute poisoning treatment Passive immunization Hepatitis A vaccine Active immunization Test Your Knowledge

  22. Test Your Knowledge Cont. 5. Tetanus vaccine • Active immunization 6. Chicken pox • Active immunity 7. Measles, mumps, and rubella vaccine • Active immunization

  23. Common Sense Measures • Hand washing

  24. Common Sense Measures • Good Nutrition • Regular exercise • Bathe or shower daily • Cover mouth when coughing or sneezing • Avoid contact with people who are sick • Avoid sharing of utensils

  25. Come out, Come out Wherever you are?

  26. Quick Review

  27. THE END

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