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15 Cards in this Set

  • Front
  • Back
1. What are the Three Kinds of
Gram Positive Cocci
1. Staphylococcus
2. What are the three kinds of Staph?

2. Two most common Staph A sources
2. Staphylococcus aureus
Staphylococcus saphrophyticus
Staphylococcus epidermitis

2. People and Fomites
15% adults have it in nose
50-80 % on healthcare workers
3. Two most common staph A diseases

3. Most common form of tox in Staph A
3. Pus (abscess) (suppurative) and toxin

3. food at room temp + handlers
toxic shock synd.
4.Most common type of food poisoning in the US : Staph Ar or Bacillus Cereus?

4. Type of toxin - entero, endo, or exo?
4. Staph Ar

4. enterotoxin TSST-1 ; acts as superantigen
5. Examples of S. Auseus systemic infections

Virulence Factors
5. Endo carditis, Septic arthritis (Most common) Osteomyelitis, Pneumonia

Capsule- facilitate adherence
Peptidoglycan -Endotoxin-like activity
Teichoic acid - Involved in complement activation
Protein A - Binds to Fc region of IgG
Reduces binding of phagocytes via FcR
Inhibits comlement activation
Catalase - converts h2o2 to water
Coagulase - bact hide in clots
6. The two Coagulase Negative Staph are?
6. S. saphrophyticus
S. epidermitis
7. Clincal manifestations and virulence of s. epidermidis

7. s. saphrophyticus resistant to this ABx, and UTI?
7. Endocarditis and biofilm

7. novibiocin . 2nd most common cause of UTI in sexually active women
8. Streptococci are Gram Positive chain or diplococci that are classified based on two things:
8. Hemolysis and Serologic reactivity
9. 3 types of lysis are complete, incomplete, and none - GREEK?

9. Strep A vs. strep b is Based on antigenic differences carbohydrates of cell wall. What is the name the two?
9. Beta (clear)
Alpha (Green)
Gamma (red)

Streptococcus pyogenes- Group A
Streptococcus agalactiae- Group B
10. Where does GAS transiently colonize
and what new protein is seen?

10. Three conditions GAS is associated with
10. Oropharynx and M - IgG against M protein important adaptive host defense
GAS is usually a secondary invader

10. Strep throat, scarlet fever and impetigo (also in staff a)
11. This sequallae of GAS is one of the leading causes of heart disease in 3rd wc

11. Layers of skin involved in erysidelas and cellulitis?
11. Rheumatic Fever

11. upper and deeper.
12. Is GAS and enter, exo, or endotoxin
A, B, or C

12. GBS (name) causes three things in newborns?
12. Exo - strep toxic shock synd. A is most important

12. s. agalactiae - Important cause of neonatal meningitis and neonatal sepsis
Leading cause of infectious death in newborns
13. Where does GBS colonize?

13. Strep Viridans (mutans) causes what
13. GI and GU tracts (we are the source)

13. Dental caries and bacterial endocarditis
14. This is the leading cause of serious infection worldwide?

Who is the reservior?

Effect in kids?
14. Streptococcus pneumoniae. This and GAS are most serious infect dis.

human reservior, direct P 2 P contact..

Causes otitis media in kids
15. How can you get Enterococci infections?

15. See any resistance to ABx
15. Abdominal surgury and comtaminated wated

15. Yes, Vancomycin-resistant enterococci (plasmid-mediated)- very serious pathogen