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Infectious Disease

Infectious Disease. Infectious Diseases are passed from person to person. They are passed through the air, water, soil, and food. These all mean organisms that cause disease. Pathogens Germs Microorganisms Antigens.

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Infectious Disease

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  1. Infectious Disease • Infectious Diseases are passed from person to person. They are passed through the air, water, soil, and food.

  2. These all mean organisms that cause disease. • Pathogens • Germs • Microorganisms • Antigens

  3. There are six major pathogens that cause infectious diseases. They are very small and can only be seen with a microscope.

  4. 1. Virus A virus can only reproduce inside a living host cell.

  5. Name some diseases that are caused by viruses.

  6. Flu

  7. AIDS

  8. Foot and Mouth Disease

  9. Rabies

  10. More Viral Diseases • Chicken Pox • Colds • Hanta virus • Measles • Mumps • Pneumonia • Mononucleosis • West Nile Virus

  11. There is no cure for a viral disease

  12. 2. Rickettsia . Rickettsias are pathogens that are carried in the intestines of insects.

  13. Tick

  14. Rickettsias cause these diseases • Rocky Mountain Spotted Fever • Lyme Disease

  15. Vectors A vector is any animal or insect that carries pathogens that cause diseases.

  16. 3. Bacteria Bacteria can reproduce anywhere, especially in dark, warm, moist places.

  17. Can you name some diseases that are caused by bacteria?

  18. Impetigo

  19. Staph Infection

  20. Tuberculosis

  21. E. Coli

  22. Appendicitis

  23. Pneumonia

  24. Encephalitis

  25. More Bacterial Diseases • Strep Throat • Ear Infections • Bronchitis • Salmonella • Sinus Infections • Gangrene • Flesh Eating Bacteria • Meningitis

  26. Bacteria can only be cured with antibiotics.

  27. Bacteria come in 3 shapes • Cocci • Bacilla Rods • Spirilla

  28. 4. Fungi Fungus usually causes hair skin and nail infections.

  29. Diseases that are caused by fungus. • Athletes Foot • Ringworm • Fingernails

  30. Diseases that are caused by fungus are cured by antifungal ointments, creams, and powders. Sometimes, a prescription medication is needed.

  31. 5. Protozoa Single Celled Animals

  32. Diseases Caused by Protozoa • Dysentery • Cholera • Malaria

  33. Protozoa Diseases caused by protozoa are usually found in hot tropical untreated water.

  34. 6. Parasitic Worms Usually found in raw or very rare meat. May be found in untreated water.

  35. Can you name these Parasites? • Pin Worm • Giardia • Plasmodium • Parasite

  36. In order for a person to get sick 5 things must be present.

  37. 1. A pathogen must be present.

  38. 2. The germ must • have a place to • survive.

  39. 3. There must be • a mode of • transmission. • Indirect • Direct

  40. 4. There must be a place of entry.

  41. 5. There must be a susceptible host who is unable to resist getting the disease.

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