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MICROORGANISMS

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Title: MICROORGANISMS


1
MICROORGANISMS
2
Objectives
  • Identify 5 classes of microorganisms
  • Differentiate between pathogens and non pathogens
  • Identify some common diseases cause by pathogens

3
  • Diseases are caused by a variety of
  • germs (pathogens).
  • Healthcare workers MUST understand
  • the different types of
  • pathogens (germs),
  • Ways pathogens are spread

4
  • This allows the HCW (Healthcare Worker) to take
    precautions to prevent the spread of disease

5
Microorganisms(2 types)
  • Non-Pathogen (a microorganism that does not cause
    a disease)
  • Pathogen (a microorganism that causes infection
    or diseases)
  • Some microorganisms live in 1 system but cause
    infection if get into another

6
PATHOGENS
  • Microorganism-small, living organism that are not
    visible to the naked eye that can cause an
    infection
  • Must be viewed under a microscope
  • Found everywhere in the environment
  • On and off the human body

7
5 classes of Microorganisms
  • Bacteria
  • Protozoa
  • Fungi
  • Rickettsiae
  • Viruses

8
1 Bacteria
  • Antibiotics are used to kill bacteria
  • Some strains of bacteria are resistant to
    antibiotics
  • Must continually develop newer antibiotics to
    treat bacteria
  • Staphylococci, streptococci, meningitis,Pneumonia,
    toxic shock, boils, wound infections

9
CocciRound
10
Cocci/Pairs
  • Called diplococci
  • Cause disease such as gonorrhea, pneumonia,
    Meningitis

11
Cocci Bacteria/Clusters
  • Staphylococci
  • MRSA
  • Cause pus
  • Infections

12
Strep Throat/Chains of Cocci
13
Rods
14
TB, Pertussis, Botulism
15
Spirillus (spiral-shaped) bacteria
  • Cause syphilis and cholera

16
Syphilis
17
2 Protozoa
  • 1-celled animal like organisms
  • Often found in decayed materials and contaminated
    water.
  • Some are pathogenic and cause diseases

18
Protozoa
  • Have tails/enable
  • to swim
  • Malaria, African
  • sleeping sickness,
  • Trichomonas

19
3 Fungi
  • Plant like organisms
  • Live on dead organic matter
  • Yeasts Molds
  • Cause ringworm, thrush
  • Yeast Vaginitis
  • Not killed by antibiotics

20
Fungi
21
Thrush
22
(No Transcript)
23
4 Rickettsiae
  • Parasitic
  • organisms
  • Cannot live outside
  • of body
  • Lice
  • Ticks
  • Fleas
  • Can cause
  • Typhus , lyme disease

24
5 Viruses
  • Smallest of microorganisms
  • Cannot reproduce without a living cell
  • Major risk to healthcare workers as they are
    blood borne
  • Examples include Hepatitis B, C HIV
  • Cannot be cured with Antibiotics

25
Viruses (Cont)
  • Cause
  • Colds, measles, flu, warts, chicken pox
  • Herpes
  • Hepatitis B and C
  • Aids
  • polio

26
HIV
27
A SyndromeA group of symptoms in a particular
disease
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