Miscellaneous Organisms

Question 1

Chlamydiaceae

Answer 1

non growth on conventional media - tissue culture (McCoy cells, gold standard for recovery)

Question 2

Chlamydia trachomatis

Answer 2

ocular infectious, STI, lymphogranuloma venerum

demonstrates tissue tropism

Question 3

Chlamydia psittaci

Answer 3

birds - outbreaks associated with turkeys

Question 4

Ocular trachoma

Answer 4

WHO 5 stages - TF/TI/TS/TT/CO

Question 5

Trachomatous inflammation follicular (TF)

Answer 5

presence of 5 or more follicles in the upper tarsal conjunctiva of at least 0.5mm

Question 6

Trachomatous inflammation interne (TI)

Answer 6

pronounced inflammatory thickening of the tarsal conjunctiva that obscures more than half of the normal deep tarsal vessels

Question 7

Trachomatous scarring (TS)

Answer 7

presence of scarring in the tarsal conjunctiva

Question 8

Trachomatous trichiasis (TT)

Answer 8

at least one eyelash rubs on the eyeball or there is evidence of recent removal of in turned eyelashes

Question 9

Corneal opacity (CO)

Answer 9

easily visible corneal opacity over the pupil

Question 10

Chlamydia pneumoniae

Answer 10

old term TWAR
atypical pneumonia
82% population antibody (+)

Question 11

Rickettsia rickettsii

Answer 11

Rocky Mountain spotted fever

Question 12

Rickettsia prowazekii

Answer 12

Epidemic (louse borne) typhus

Question 13

Rickettsia typhi

Answer 13

Murine typhus

Question 14

Ehrlichia chaffeensis

Answer 14

infects human monocytic cells

Question 15

Ehrlichia canis

Answer 15

infects canine monocytic cells

Question 16

Ehrlichia weingii

Answer 16

infects human and canine monocytic cells

Question 17

Ehrlichia

Answer 17

transmitted by ticks
increased ALT
masses (morula) visualized in cytoplasm of infected monocytes

Question 18

Anaplasma

Answer 18

infects granulocytic cells

transmitted by ticks

Question 19

Coxiella burnetti

Answer 19

Q fever

Question 20

Legionella ID

Answer 20

catalase (+)
oxidase V+ weak
somewhat fastidious
relatively inert

Question 21

Gardnerella vaginalis

Answer 21

amsel criteria - must meet 3/4
nugget scoring system 1-10
HBT agar

Question 22

Gardnerella vaginalis ID

Answer 22

hippurate (+)
starch hydrolysis (+)

Question 23

Amsel criteria

Answer 23

homogenous discharge
vaginal pH >4.5
(+) whiff test with 10% KOH
presence of clue cells

Question 24

Mycoplasmataceae

Answer 24

smallest microorganisms capable of self replication
lack cell wall
contain sterols
fried egg colony

Question 25

Mycoplasmataceae hominis

Answer 25

arginine (+)

Question 26

Mycoplasmataceae pneumoniae

Answer 26

glucose (+)

Question 27

Mycoplasma pneumonia

Answer 27

never normal flora
primary atypical (walking) pneumonia

Question 28

Mycoplasma pneumonia media

Answer 28

SP4 broth or agar
H agar
NYC agar
PPLO agar

Question 29

Ureaplasma urealyticum

Answer 29

urea (+)

A8 agar or Shepards 10B broth