MISCELLANEOUS BACTERIA (Atypical microorganisms)

Question 1

Causes primary atypical pneumonia and has been associated with joint and other infections/ walking pneumonia:

Answer 1

Mycoplasma pneumoniae

Question 2

Causes postpartum fever and has been found with other bacteria in uterine tube infections:

Answer 2

Mycoplasma hominis

Question 3

Cause of niongonococcal urethritis in men and is associated with lung disease in premature infants of low birth weight:

Answer 3

Ureaplasma urealyticum

Question 4

Closely related to M. pneumoniae and has been associated with urethral and other urogenital infections.

Answer 4

Mycoplasma genitalium

Question 5

In PPLO agar (pleuropneumonia-like organisms) M. hominis characteristic colony appearance:

Answer 5

“Fried egg” colonies

Question 6

stain used for the isolated colony of Mycoplasma in agar:

Answer 6

Dienes stain

1. Bacterial colonies lose the stain in 15 minutes
2. Mycoplasma colonies retain blue color

Question 7

Obligate intracellular gram-negative bacteria that lack mechanisms for the production of metabolic energy and cannot synthesize ATP; cell wall lacks peptidoglycan; do not gram stain well:

Answer 7

Chlamydia and Chlamydophilia

Question 8

Only Chlamydia spp. susceptible to Sulfonamide:

Answer 8

Chlamydia trachomatis

Question 9

C. trachomatis serotype that causes trachoma and blindness (found in Africa)

Answer 9

Serotype A, B, C

Question 10

C. trachomatis serotype that causes Urethritis, Pelvic Inflammatory Disease (PID), Neonatal pneumonia, Neonatal conjunctivitis (Ophthalma neonatorum)

Answer 10

Serotypes D through K

Question 11

C. trachomatis serotype that causes Lymphogranuloma venereum (LGV)

Answer 11

L1, L2, L3

Question 12

Chlamydia spp. that causes pneumonia, bronchitis, pharyngitis, sinusitis?

Answer 12

C. pneumoniae

Question 13

Chlamydia spp. that causes parrot fever, pneumonia, fever of unexplained origin

Answer 13

C. psittaci

Question 14

Infectious form of Chlamydia; enters cell via endocytosis:

Answer 14

Elementary bodies

Question 15

Reproductive form of Chlamydia; replicates in cells by binary fission:

Answer 15

Reticulate bodies

Question 16

EBs in Giemsa stain =

Answer 16

Stains purple

Question 17

RBs in Giemsa stain =

Answer 17

Stains blue

Question 18

C. trachomatis in Dilute Lugol’s iodine =

Answer 18

C. trachomatis inclusion appear brown because of glycogen

Question 19

Chlamydia spp that has glycogen as inclusions:

Answer 19

C. trachomatis

Question 20

Cell culture for Chlamydia:

Answer 20

McCoy cells treated with cycloheximide

Question 21

Molecular methods for Chlamydia:

Answer 21

Nucleic acid amplification testing (NAAT)

Question 22

Chlamydia is often found as coinfection with _________.

Answer 22

N. gonorrhoeae

Question 23

Bacterium that causes tranch fever, can be cultivated in cell-free medium.

Answer 23

Rochalimea quintana/ Bartonella quintana/ Ricketssia quintana

Question 24

Agglutinating antibodies produced react against antigens of proteus strains:

Answer 24

Weil-Felix Reaction

Question 25

P. vulgaris antigen strains for Weil-Felix reaction:

Answer 25

Proteus OX-19 and OX-2

Question 26

P. mirabilis antigen stain for Weil-Felix reaction:

Answer 26

Proteus OX-K

Question 27

patients with typhus group disease reacts strongly with proteus ______ antigen

Answer 27

Proteus OX-19

Question 28

patients with spotted fever reacts strongly with proteus _______ antigen

Answer 28

Proteus OX-19 or OX-2

Question 29

patients with scrub typhus reacts strongly with proteus _______ antigen

Answer 29

Proteus OX-K

Question 30

Bacteria that causes Typhus (Endemic typhus) disease:

Answer 30

Rickettsia prowazekii
Rickettsia typhi

Question 31

Bacteria that causes spotted fever

Answer 31

Rickettsia rickettsia

Question 32

Bacteria that causes scrub typhus

Answer 32

Orientia tsutsugamushi

Question 33

Bacteria that causes Rickettsia pox

Answer 33

Rickettsia akari

Question 34

Bacteria that causes Q fever

Answer 34

Coxiella burrnetii

Question 35

Bacteria that causes Mediterranean fever

Answer 35

Rickettsia conorii

Question 36

Diseases that are transmitted by ticks:

Answer 36

• Rocky Mountain Spotted Fever (R. rickettsi)
• Australian/Queensland typhus (R. australis)
• Mediterranean Fever (R. conorii)
• Q Fever (C. burnetti)

Question 37

Bacteria that causes Australian/Queensland typhus

Answer 37

Rickettsia australis

Question 38

Diseases that are transmitted by Mites:

Answer 38

• Rickettsial pox (R. akari)
• Scrub typhus (O. tsutsugamushi)

Question 39

Diseases that are transmitted by Lice:

Answer 39

• Trench Fever (B. quintana/Rochalimea quintana/Rickettsia quintana)
• Epidemic typhus (R. prowazekii)