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. Cocci Round

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
TB, Pertussis

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

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 (Con’t) Cause: Colds, measles, flu, warts, chicken pox Herpes
Hepatitis B and C
Aids
polio

26. HIV

27. A Syndrome A group of symptoms in a particular disease