(8) 4TH Pathogen

• MODE OF TRANSMISSION

  Direct

  • requires physical contact with an infected person
  • Saliva, blood, open wounds, skin to skin contact & sexual

   

  Indirect

  • Airborne -  droplets, dust (air)
  • Vehicle-born - transmitted via objects (things)
• Common pathogens

  • Bacteria
  • Virus
  • Rickettsia
  • Fungi
  • Protozoans
  • Parasitic Worms
• Bacteria


  One celled microscopic organism
• Types of bacteria


  • Sprophytes - bacteria that digest non-living food like milk and meat
  • Parasite - bacteria that eats/get supply of food by living plants and animals
• Toxin bacteria


  Certain toxin/poison
• Toxin bacteria

  • Botulism - food poison
• Resident bacteria


  Live in human mouth and intestine
• Resident bacteria

  • Lactobacilli - intestinal tract lactic acid
• Virus


  Worst human bodies enemy
• Viruses


  • Cold Virus - nervous system, brain cell
  • Polio Virus
• Ricketssia


  Grow in the intestinal tracts of insect
• Ricketssia transmission

  Carry ricketssias to human boy by bloodsukcing insects like lice & ticks
• Fungi


  • Cannot make their own food
  • Lives in dark and damp/moist environment
• Fungi


  • Yeast
  • Mushroom
• Fungi infections


  Cause scalp infection thru ringworm & Athletes foot
• Protozoans

  One celled microscopic
• Protozoan transmission


  Places that has poor sanitation, bad cleanliness
• Protozoans


  • Amoeba (water) - amoebiasis (sick/disease)
• Parasitic worms


  • Tapeworm
  • Pinworm
• Parasitic worms


  Helminths (Helmis)
• PATHOGEN

  • Infects and invade the body that attack cells and tissues.