Micro Associations Flashcards
Tumbling motility, grows in cold, β-hemolytics
Listeria - meningitis in babies, unpasteurized milk
Gastroenteritis from mayo?
Staph aureus
Where does Staph Aureus colonize?
Nose
Adherent biofilms
Staph epidermidis
Hepetization of lung during pneumonia?
Strep. pneumo
Rusty sputum and sepsis in sickle cell/spenectomy
Strep pneumo
Lancet-shaped, G+ diplococci
Strep pneumo
S. sanguinis makes dextrans which allows for ___________.
Endocarditis (viridins group)
Binds to fibrin-platelet aggregates
Strep pharyngitis
PHever or glomerulonePHritis
Scarlet fever
Strawberry tongue
Scarlet sandpaper rash
Circumoral pallor
Hippurate test +
Group B strep - screen women at 35-37 weeks
Intrapartum penicillin prophylaxis
Metachromatic blue and red granules + Gram Positive rods
C. diptheriae
How do you kill spores?
Autoclave - steam at 121˚C for 15 min
What bugs form spores?
B. anthracis C. perfringens C. tetani & botulinum B. cereus Coxiella burnetti
What toxins does C. Diff produce
Toxin A - destroys brush border enzymes
Toxin B - depolymerizes actin
What is the only bacterum with a polypeptide capsule w/ D-glutamate
Bacillus anthracis
What causes gastroenteritis from rice/pasta?
B cereus - cereulide
Tumbling motility, deli meats and unpasteurized milk
Listeria
What is the only Gram Positive to produce LPS?
Listeria
Where is Nocardia found? What infections does it cause?
Soil - pulmonary infections in IC and cutaneous infections post trauma in IC
What are the branching filamentous G+ bugs?
Nocardia
Actinomyces
What do you give AIDS patients for MAC prophylaxis?
Azithromycin
What is the reservoir in the US for M leprae?
Armadillos
What bug has cord factor and sulfatides?
Mycobacterium tuberculosis
CF = block Mφ maturation and induces release of TNF-α
Sulfatides = inhibit phagolysosomal fusion
Pasteurella
Animal bites
How do you treat Neisseria?
Ceftriaxone
What drugs do you use for prophylaxis of Meningitis (neisseria) in close contacts?
Ceftriaxone
Cipro
Rifampin
What 2 diseases does legionella cause?
Pontiac fever = mild flu
Legionnaires = severe pneumonia
Treat w/ Macrolide or quinolone
What 2 toxins does pseudomonas have?
Endotoxin - fever/shock
Exotoxin A - inactivates EF2
What causes hot tub folliculitis?
Pseudomonas