1. Unit 12

2. Microorganisms Non pathogens - useful to our body, do not cause disease. Help process cheese, bake bread… Pathogen- cause disease/ infection. Grow in warm, dark, moist environment Microbes- germs that cs infections Nosocomial infection occurs in a healthcare facility.

3. Bacteria Bacteria- one cell, cs infection skin, respiratory, urinary, blood Shape: coccus= circle, bacillus= rod, spirillum= spiral Colonies: diplo=pairs, strepto =chains, staphylo=cluster Important for identification & determining treatment Can take antibiotics

4. Bacterial Infections Antibiotics used to treat MRSA- methicillin resistant Staph Streptococcus E Coli Pseudomonas Salmonella Chlamydia Gonorrhea

5. Fungi Yeast- single cell. Infect: mouth, vagina, = candida albicans skin (ringworm) Tinea capitis Feet = Tinea pedis (athletes foot) Mold- Aspergillus- ling infection *opportunistic parasites *AIDS pt very susceptible for infections

6. Virus & Protozoa Smallest organism Common infections: hepatitis, herpes, HIV, AIDS, chicken pox, Flu, common cold, measles, mumps NO CURE, treat symptoms Protozoa: one cell, lives on matter Malaria, Toxoplasmosis

7. Viral Infections Shingles Flu Hepatitis Aids Herpes cold

8. Chain of Infection Causative Agent Reservoir or source Portal of Exit Susceptible Host Portal of Entry Method Of transmission Airborne Droplet Contact

9. Natural Defenses Tears Mucous Membranes Intact skin HCL acid in stomach Hair WBC Enzymes

10. Signs of illness Abnormal VS- 1 st indicator that something is wrong Inflammation Always make sure VS are checked and accurate.

11. Preventing infections HAND WASHING Water intake Exercise Diet Healthy bowel habits Hygiene Immunizations/vaccines