1. COMMUNICABLE DISEASES Communicable Disease- a disease that is spread from one living thing to another through the environment. Pathogen – an organism that causes disease. Infection – a condition that occurs when pathogens enter the body, multiply and damage body cells.

2. Intro Videos Killer Outbreaks Anthrax

3. Viruses Viruses- pieces of genetic material surrounded by a protein coat. Viruses- pieces of genetic material surrounded by a protein coat. *Inactive, need living cells *Inactive, need living cells *Multiply in cells, then burst into other cells. *Multiply in cells, then burst into other cells. *Usually killed by immune system *Usually killed by immune system *Antibiotics do not work *Antibiotics do not work Examples: Examples: *Common cold *Common cold *Influenza (flu) *Influenza (flu) *Viral pneumonia *Viral pneumonia *Viral hepatitis *Viral hepatitis *Polio *Polio *Mononucleosis *Mononucleosis *Measles *Measles *AIDS *AIDS *Chicken Pox *Chicken Pox *Herpes *Herpes *Rabies *Rabies

4. Bacteria Bacteria- single- celled microorganisms Bacteria- single- celled microorganisms Live everywhere Live everywhere Most harmless Most harmless Can produce a toxin – a substance that kills cells or interferes with their functions Can produce a toxin – a substance that kills cells or interferes with their functions Treated with antibiotics – a class of chemical agents that destroy disease causing micro- organisms while leaving the patient unharmed –either kill bacteria or prevent it from reproducing Treated with antibiotics – a class of chemical agents that destroy disease causing micro- organisms while leaving the patient unharmed –either kill bacteria or prevent it from reproducing Examples: Examples: Strep throat Strep throat Tuberculosis Tuberculosis Diptheria Diptheria Gonorrhea Gonorrhea Lyme disease Lyme disease Pinkeye Pinkeye Bacterial pneumonia Bacterial pneumonia Bacterial meningitis Bacterial meningitis

5. Other Pathogens: Fungi – plantlike organisms such as mold or yeasts Protozoans – single-celled organisms that are larger and more complex than bacteria Rickettsias – pathogens that resemble bacteria usually enter the body through bites.

6. Transmission Direct Contact Indirect Contact Contaminated objects Vectors Water and Food Airborne Transmission

7. PREVENTION: Washing hands Handling Food Properly Balanced Diet Avoid sharing Proper Food Storage Unnecessary Contact with people who are ill Vaccinations Abstinence