Microbiology
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Cafinas1.docx
Cafinas1.docx
BIOL 2267: Medical Microbiology Ch. 21-23 Informational tables
Complete the informational tables on Ch. 21, 22, and 23 by summarizing information in your own words. Keep in mind that some diseases may have more than one pathogen, method of transmission, portal of entry, etc. The first disease(s) in each chapter table have been completed as worked examples. Some diseases include bolded items within the tables that should be included in your completed table specifically, along with other information required from the table columns. Use these informational tables when completing your case study assignments (separate posting in D2L Brightspace). Submit to the D2L Assignment folder by Monday, December 4, 11:59 pm as a Word document (.docx) or PDF (.pdf).
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Ch. 21 Microbial diseases of the skin and eyes |
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Diseases |
Pathogen |
Portal of Entry |
Symptoms |
Method of Transmission |
Complications, prevention, other notable info |
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Impetigo |
Staphylococcus aureus most common, Streptococcus pyogenes less common. |
Parenteral (break/abrasion in skin) |
-pustules that rupture, become crusted (light “honey” color crusts typical) |
-direct contact (highly contagious, ages 2-5 years most affected) -indirect contact transmission (such as via clothing, bed linens, toys) |
-usually none (no scarring, generally heal without treatment) |
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Scalded skin syndrome |
Staphylococcus aureus most common, Streptococcus pyogenes less common. |
Parenteral (break/abrasion in skin)
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-blisters, separation of skin layers due to toxins
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-direct contact (highly contagious, ages 2-5 years most affected) |
-fluid regulation problems, subsequent infection of deeper tissues -toxins causing symptoms, 2 types: 1. toxin A- localized, bullous impetigo 2. toxin B- circulates, scalded skin syndrome |
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Toxic shock syndrome |
Staphylococcus aureus most common, Streptococcus pyogenes less common. |
-parenteral (examples: surgical incisions, injury related to childbirth) |
-fever, vomiting, sun-burn rash, can progress to shock, organ failure |
- direct contact (highly contagious, ages 2-5 years most affected) |
-organ failure, death |
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Necrotizing fasciitis
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Role of pyrogenic toxins: |
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Diseases |
Pathogen |
Portal of Entry |
Symptoms |
Method of Transmission |
Complications, prevention, other notable info |
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Measles |
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Define macular rash: |
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Rubella |
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Chickenpox (varicella)
Shingles |
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Define vesicles: |
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Ch. 22 Microbial diseases of the nervous system |
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Diseases |
Pathogen |
Portal of Entry |
Symptoms |
Method of Transmission |
Prevention & notable complications: |
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Haemophilus influenza meningitis |
Haemophilus influenza bacteria ( Hib) |
most commonly respiratory mucous membrane (m/o can be normal throat flora) |
-initial “triad” of illness: fever, headache, stiff neck -nausea & vomiting -may progress to convulsions, coma |
-direct person to person -droplet |
-Hib vaccine |
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Meningococcal meningitis |
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Pneumococcal meningitis |
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Tetanus |
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Botulism |
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Compare incidence in acidic vs. low acid foods: |
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Polio |
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Compare IPV to OPV: |
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Ch. 23 Microbial diseases of the cardiovascular and lymphatic systems |
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Diseases |
Pathogen |
Signs & symptoms |
Reservoir |
Method of Transmission |
Complications, prevention, other notable info |
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Sepsis: Gram-negative |
Gram-negative bacteria |
-fever, chills, accelerated breathing & heart rate -lymphangitis (inflamed walls of blood vessels visible as red streaks on skin) -shock |
-can vary, often human reservoir |
-varies depending on source of infection; may be direct or indirect contact, vehicle transmission (such as through water) |
-due to endotoxin LPS when gram-negative bacteria cells lyse -progression to lethal stage of disease is rapid -antibiotics can aggravate the condition |
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Sepsis: Gram-positive |
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Endocarditis Subacute bacterial
Acute bacterial |
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Why tooth extractions or tonsillectomy is notable: |
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Rheumatic fever |
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Connection to strep throat: |
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Infectious mononucleosis |
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Why are young adults more likely to show symptoms? |
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Plague |
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Lyme disease |
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How long does the tick need to be attached to transfer bacteria? |
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