Exam 2 Highlights

Question 1

RUST SPUTUM

Answer 1

S. pneumoniae

Question 2

SATELLITE PHENOMENON on blood agar

Answer 2

Haemophilus influenzae

Question 3

CHINESE LETTERS APPEARANCE

Answer 3

C. diptheriae

Question 4

CURRANT JELLY SPUTUM

Answer 4

Klebsiella pneumoniae

Question 5

FRIED EGG APPEARANCE & MULBERRY SPUTUM

Answer 5

Mycoplasma pneumoniae

Question 6

Obligate intracellular

Answer 6

Chlamydophilia pneumoniae

Legionella pneumophilia

Question 7

REQUIRES COINFECTION WITH HEMOLYTIC BACTERIA

Answer 7

Haemophilus influenzae

Question 8

Culture on buffered charcoal yeast extract

Answer 8

Legionella pneumophilia

Question 9

PROMPTS IMMUE SYSTEM TO ABSORB THE BACTERIA

Answer 9

Legionella pneumophilia

Question 10

“RUFF, TUFF & BUFF” in culture

Answer 10

M. tuberculosis (MTB)

becz of cording and clustering

Question 11

terminal spores (TENNIS RACQUET)

Answer 11

C. tetani

Question 12

subterminal heat resistant spore

Answer 12

C. botulinum

Question 13

Need two administrations of flu vaccine

Answer 13

Kids under 9 yo

Question 14

A/w atherosclerosis

Answer 14

chlamydiae pneumonaie

Question 15

Novel fusion protein causes syncytia formation

Answer 15

PIV

Question 16

Most common cause of infant croup

Answer 16

Parainfluenza type 1 and 2

Question 17

To prophylactically treat high risk pts for RSV

Answer 17

Monoclonal immune globin (Palivizumab)

Question 18

G + diplococcus
Alpha hemolytic colonies (greenish)
Optochin sensitivity

Answer 18

Strep pneumoniae (pneumococcus)

Question 19

Smallest of free-living bacteria that lack cell walls, look like fried egg in culture, have sterols in their membranes.

Answer 19

Mycoplasma pneumoniae

Question 20

Has lipooligosaccharide (LOS)) as opposed to LPS like other gram negs

Answer 20

Haemophilus influenzae

Question 21

Image that could be used on exam: long-stranded gram neg, bacillus, single polar flagellum

Answer 21

Serogroup 1 of Legionella pneumophilia

slide 20, lecture 13- bact pna II

Question 22

Gold standard of dx for Legionella pneumophilia

Answer 22

Culture on buffered charcoal yeast extract

high sens, only for serogroup 1

Question 23

Virulence factor that produces ROS and induces apoptosis

Answer 23

Pyocyanin

one of 2 pigments of pseudomonas aeroginosa along with pyoverdin

Question 24

Dead give waya of pseudomonas aeroginosa infection

Answer 24

Sputum or pus may fluoresce

“Fruity smell”

Question 25

MTB virulence factor that interferes with macrophage activation by IFN-y

Answer 25

Lipoarabinomanna

Question 26

Big difference betwn MTB and nontuberculosis mycobacteria

Answer 26

NTB is ubiquitous- found in water, soil, plants MTB is passed person-to-person

Question 27

Most common cause of NEONATAL bacterial meningitis

Answer 27

Strep agalactiae

Question 28

Presumptive lab test for Strep agalactiae include detection of

Answer 28

CAMP factor - not used much anymore but shows up as board question

Question 29

Most common cause of bacterial meningitis in general

Answer 29

strep pneumoniae -almost always follows s. pneumoniae pneumonia infection

Question 30

Source of E. coli neonatal meningitits

Answer 30

rectal colonization of mother's vagina

Question 31

Virulence factor of listeria monocytogenes that disrupts the phagolysosome membrane

Answer 31

Listeriolysin O

Question 32

Leading cause of meningitis in CANCER patients

Answer 32

Listeriosis

Question 33

Potent exotoxin released by bacteria in tetanus

Answer 33

Tetanospasmin

Question 34

Most potent toxin known

Answer 34

Botulism neurotoxin

Question 35

2 forms of toxoplasma gondii

Answer 35

Trophozoites (tachyzoite acute disease, bradyzoite chronic disease) Cysts (oocyst is sexual stage in cats, zoitocyst contains bradyzoite)

Question 36

Definitive hosts of toxoplasma gondii

Answer 36

CATS

Question 37

Trophozoite that posses SPIKED PSEUDOPODIA is a morphological form of

Answer 37

Acanthamoeba

Question 38

Produces thick capsule, stains negatively w/ india ink (stains background of medium)

Answer 38

Cryptococcus neoformans