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Flashcards in CLINICAL MICRO Deck (238)
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1

Compare the rash of tick-borne rickettsia to that of louse-borne rickettsia

Tick = RMSF = palms and soles to trunk (centripetal); Louse = epidemic typus (R. prowazekii) = trunk to palms and soles (centrifugal)

2

What disease has morulae in granulocyte cytoplasm)

Anaplasmosis (monocyte would be Ehrlichia)

3

What is the natural reservoir of Borrelia burgdorferi?

mouse

4

What bug can you get from cattle and sheep amniotic fluid?

Coxiella burnettii (Q fever); veteranarians

5

What stabilizes the membrane of Mycoplasma pneumoniae?

sterols (no cell wall)

6

What causes neonatal staccato cough?

Pneumonia caused by C. trachomatis D-K serotypes

7

Which type of E. coli ferments sorbitol?

Everything but EHEC

8

What is the vector for Rickettsia prowazekii?

louse

9

What is Elek's test?

The test for diphtheria toxin

10

What serotypes of C. trachomatis cause lymphogranuloma venereum?

L1, L2 , and L3

11

How do you treat C. trachomatis?

Azithromycin (or doxy) with Ceftriaxone for likely Gonorrheal co-infection

12

Name 3 diseases that have a palm and sole rash

Rickettsia rickettsii (RMSF), Coxsackie A16 (hand foot and mouth), Secondary syphilis

13

What are the 3 main genera of spirochetes?

Leptospira, Treponema, and Borrelia

14

Chronic pneumonia in CF patients is usually caused by _________ and the most important virulence factor here is __________

P. aeruginosa; Biofilm

15

What 2 Chlamydial spp. Cause atypical pneumonia?

C. pneumoniae and C. psitiacci

16

What is another name for Weil's disease?

Icterohemorrhagic leptospirosis

17

What bacteria does someone likely have if the X-ray looks worse than the patient?

Mycoplasma pneumoniae

18

Which type of E. coli flattens villi?

EPEC (P for Peds)

19

What causes diabetic osteomyelitis and sickle cell osteomyelitis?

DM = P. aeruginosa (prob an extension of skin infection of an ulcer) HbS = Salmonella enteriditis

20

How would you know if an infectious facial palsy was Ramsay-Hunt or Lyme disease?

Ramsay-Hunt syndrome is a VZV bell's palsy and is unilateral with blistering; Lyme disease is bilateral

21

What is the cause of undulant fever?

Brucella

22

What are 2 possible outcomes of streptococcal pharyngitis that self resolves?

Rheumatic fever and PSGN

23

What is the gram stain of a bug causing a cherry red epiglottis?

Gram negative coccobacillus

24

The bacteria grown on Eaton's agar is common in what 2 demographics?

M. pneumoniae is common in military recruits and prisons

25

What do C. trachomatis serotypes L1, L2 and L3 cause?

Lymphogranuloma venereum

26

What serotypes of C. trachomatis cause blindness in Africa? What is the pathogenesis here?

A, B, and C? Flies transmit the bug and it causes conjunctivitis with scarring, this occurs over and over again until blind

27

What causes aortic aneurysm in tertiary syphilis?

arotitis with destruction of vasa vasorum

28

What bacteria are carried by these ticks A) Ixodes B) Lone star C) Dermacentor

A) Babesia and B. burgdorferi B) E. chaffeensis C) R. ricketsii (RMSF)

29

What are your 2 options for treating Mycoplasma pneumoniae?

Macrolide or fluoroquinolone (NO beta lactams bc no cell wall)

30

What bug causes mediastinal widening?

Pulmonary anthrax