Atypical Organisms

Question 1

What are the four main atypical organisms

Answer 1

Legionella
Chlamydia
Mycoplasma
Coli Ella

Question 2

Legionella gram type and source

Answer 2

Gram negative bacilli
Source: Contaminated water, Pontiac fever, legionaries disease

Question 3

Legionella testing and treatment

Answer 3

Testing: Urine antigen testing
Treatment: Azithromycin 500mg po x10-14 days
Levofloxacin 750mg po daily x 10-14 days

Question 4

Chlamydia gram stain

Answer 4

Gram negative rods

Question 5

What are the 3 main types of chlamydia

Answer 5

C. Pneumoniae
C. Trachomatis
C. Psittaci

Question 6

Chlamydia testing

Answer 6

PCR

Question 7

Transmission of C. Pneumoniae, C. Trachomatis, and C. Psittaci

Answer 7

C. Pneumoniae: Human to human respiratory transmission
C. Trachomatis: STI
C.Psittaci: bird to human, respiratory

Question 8

Treatment options for C. pneumoniae, C. Trachomatis, and C. Psittaci

Answer 8

C. Pneumoniae: tetracycline 500mg po QID 10-14 days
C. Trachomatis: Doxycycline 100mg po BID x 7 days
C. Psittaci: Tetracycline 500mg po QID x 14-21 days

Question 9

Mycoplasma pneumoniae shape

Answer 9

Short rods

Question 10

Diagnostic tests for Mycoplasma pneumonia

Answer 10

No testing indicated unless severe infection suspected. NAAT or PCR

Question 11

Transmission of mycoplasma pneumonia

Answer 11

Human to human droplets. URI or acute bronchitis most common.

Question 12

Treatment options for mycoplasma pneumonia

Answer 12

Macrolides, Tetracyclines, or Fluroquinolones

Question 13

Coxiella Burnettii shape

Answer 13

Short pleomorphic rod

Question 14

Transmission of coxiella burnettii

Answer 14

Mammals, birds, and ticks
Sheds in urine, feces, milk, and placenta
Produces flu like symptoms

Question 15

Coxiella Burnettii testing

Answer 15

Serologic immunofluorescence assay

Question 16

Coxiella Burnettii treatment

Answer 16

Doxycycline 100mg po BID x 14 days