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Questions and Answers
Which of the following statements about Legionella pneumophila is false?
Which of the following statements about Legionella pneumophila is false?
- it is rapid growing organism on routine laboratory media (correct)
- risk factors for infection include advanced age and smoking
- erythromycin is the drug of choice for treatment
- is water-borne organism transmitted by inhalation
Which of the following statements about Rocky Mountain Spotted Fever is incorrect?
Which of the following statements about Rocky Mountain Spotted Fever is incorrect?
- the agent grows in macrophages (correct)
- Rocky Mountain Spotted Fever is caused by _Rickettsia rickettsii_
- Rocky Mountain Spotted Fever is transmitted by hard-bodied ticks
- the agent grows in endothelial cells lining blood vessels
Which characteristic is not associated with the genus Corynebacterium?
Which characteristic is not associated with the genus Corynebacterium?
- bacilli and arranged in V, L & W form
- spore forming (correct)
- non motile
- all of the above
Which statement about mycobacterial cell-wall is incorrect?
Which statement about mycobacterial cell-wall is incorrect?
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Which mode of transmission is associated with Legionella pneumophila?
Which mode of transmission is associated with Legionella pneumophila?
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What is the drug of choice for treating Legionella pneumophila infection?
What is the drug of choice for treating Legionella pneumophila infection?
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Study Notes
Legionella pneumophila
- Legionella pneumophila is a water-borne organism transmitted by inhalation
- Erythromycin is the drug of choice for treatment
- Risk factors for infection include advanced age and smoking
- It is not a rapid-growing organism on routine laboratory media
Rocky Mountain Spotted Fever
- Rocky Mountain Spotted Fever is caused by Rickettsia rickettsii
- It is transmitted by hard-bodied ticks
- The agent grows in endothelial cells lining blood vessels
- It does not grow in macrophages
Genus Corynebacterium
- Genus Corynebacterium includes bacilli arranged in V, L & W forms
- They are non-motile
- They do not form spores
Mycobacterial Cell-Wall
- Trehalose 6-6' dimycolyl esters correlate with virulence
- Mycolic acid is responsible for acid-fastness
- There is no mention of necrosis or molecules as characteristics of mycobacterial cell-wall
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