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Flashcards in Bacterial Pneumonia 2 Deck (6)
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1

what are the characteristics of Legionella?

1. gram - rods
2. stains poorly by Gram --> requires silver or IF in tissue sections
3. facultative intracellular parasites
4. free-living form is motile (flagella) and intracellular form is non-motile

2

what are the 3 outcomes of legionella infections in human?

1. asymptomatic seroconversion
2. pontiac fever
1) flulike
2) incubates hours - 2days
3) resolves w/o complication
3. Legionnaires Dz
1) pneumonia
2) suppression of kidney function
3) incubates 2-10 days
4) usually resolves with hospitalization & treatment

3

what are the presentation of LD?

1. altered mental status
2. headache
3. high fever/chills
4. pneumonia/cough/chest pain
5. pancreatitis
6. diarrhea

4

what is the fast way to diagnose legionella infection?

urine antigen test (commercial ELISA kit)

5

treatments for legionella infection?

1. pontiac fever often resolves w/o treatment
2. LD requires an antibiotic that penetrates infected cells
1) levofloxacin
2) azithromycin
3) old school: erythromycin

6

what are the characteristics of mycoplasma bacteriology?

1. smallest free living organism
2. strictly aerobic
3. no cell wall
4. colonies have "fried-egg" shape