Bug List (Quiz 1) Flashcards
Acute bacterial endocarditis (IV drug use)
Staphylococcus aureus
Scalded skin syndrome
Staphylococcus aureus
Toxic shock syndrome (superantigen)
Staphylococcus aureus, Streptococcus pyogenes (Group A, GAS)
Cocci (sphere-shaped clusters)
Golden
Staphylococcus aureus
Medical device colonization (i.e. catheters, prosthetic valves)
Staphylococcus epidermidis
Scarlet fever
Streptococcus pyogenes (Group A, GAS)
Necrotizing fasciitis (SpeB)
Streptococcus pyogenes (Group A, GAS)
M protein Virulence factor
Streptococcus pyogenes (Group A, GAS)
SpeA and SpeC (exotoxins)
Streptococcus pyogenes (Group A, GAS)
Baby can get from mother during delivery through vaginal canal
Streptococcus agalactiae (Group B)
Neonatal meningitis, sepsis, pneumonia
Streptococcus agalactiae (Group B)
Most common cause of MOPS (Meningitis, Otitis media, Pneumonia, Sinusitis)
Streptococcus pneumoniae
IgA protease virulence factor
Streptococcus pneumoniae
Produces few toxin
Streptococcus pneumoniae
Risk factor: wool sorter’s
Bacillus anthracis
Black, dead skin surrounded by edema
Bacillus anthracis
Cyanosis
Bacillus anthracis
Exotoxins: edema Factor (EF), increases cAMP lethal factor (LF), response for necrosis/cleaves MAPK
Bacillus anthracis
Associated with reheated rice
Bacillus cereus
Pale exudate on soft palate (nerve damage, demyelination)
Corynebacterium diphtheriae
Exotoxin A: inhibits elongation factor 2 (EF-2) to inhibit protein synthesis by ADP ribosylation; necrosis (pseudomembrane formation), similar to Pseudomonas aeruginosa
Corynebacterium diphtheriae
Culture: tellurite agare or Loeffler’s medium
Toxin assay: Elek’s test
Black colonies on cystine-tellurite agar
Corynebacterium diphtheriae
Toxoid vaccine
Corynebacterium diphtheriae
Acquired by patient or mother from food (containment milk/soft cheese/meat)
Listeria monocytogenes
Neonatal meningitis (3rd most common cause)
Listeria monocytogenes
Most common cause of meningitis in adults 60+ and immunocompromised patients
Listeria monocytogenes
Can grow at refrigeration temperatures
Listeria monocytogenes
Motile: actin propellers (around cells and through membranes)
Listeria monocytogenes
Risk factor: animal contact (reptile)
Salmonella (non-typhoidal)
Lower infectiousness (high inoculum, acid-labile)
salmonellas
Poultry/egg transmission
salmonellas
Type III secretion (molecular needle)
salmonellas and shigella
H2S production on TSI agar (black colonies)
salmonellas
No antibiotics typically (if any, fluroquinolones or ceftriaxone)
Salmonella (non-typhoidal)
Fecal-oral route
Developing countries with poor sanitation
Salmonella (typhoidal)
Gastroenteritis (which Salmonella)
Salmonella (non-typhoidal)
Nausea, vomiting, cramps, diarrhea (which Salmonella)
Salmonella (non-typhoidal)
Enteric fever, rash (which Salmonella)
Salmonella (typhoidal)
High infectiousness (low inoculum, acid-stable)
Shigella
Oral-fecal transmission (unwashed hands)
Shigella