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8 Cards in this Set
- Front
- Back
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Infectious agents in Soil
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-Clostridium (enters dirty wounds
-Coccidioides immitis (fungal spores inhaled) |
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Water
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Legionella pneumophila- contaminated aerosols
Vibrio Cholera- contaminated drinking water |
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Animals
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Brucella abortus (cattle and milk)
Salmonella enteritidis (poultry and other animals) Plasmodium vivax (mosquito bites) |
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Human beings
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Staphylococcus aureus (from normal flora)
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These pathogens enter epithelial cells by endocytosis:
1. Rhinovirus 2. Chlamydia 3. E. Coli, Shigella, Campylobacter jejuni 4. Salmonella 5. Neisseria gonorhoeae |
1. common cold- infected cells of the respiratory tract lose contact with basement membrane and are carried away
2. Conjuctivitis, urethritis, pneumonia (obligate intracellular) 3. dysentery (infection in intestinal mucosa and supporting tissue) 4. Blood infection with or without diarrhea 5. bacteria are discharged from the host cell by exocytosis, may spread to other tissue via bloodstream |
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alpha toxin
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forms pores in membranes
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Phospholipase
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breaks down lecithin, a lipid component of mammalian cell membranes
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Streptokinase
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breaks down fibrin and dissovles clots
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